Logie's
Spring Migration |
Resume |
Logie
left her nest on 4th August 2007 and arrived at Roxa island in
the Guinea Bissau archipelago on 28th September. Her migration
flight was 5695 kilometres south; her daily flights ranged
between 65 and 756 kilometres. The longest being her first
flight, after her extended stop-over on the Solway, from
southern Scotland to France. Her average daily distance
flown over her 18 day migration was 298 kilometres; her
average flying time was 8 to 9 hours at a speed of 33 to 37
kilometres per hour. The shortest direct distance
between her wintering site and her nest in Scotland is 5198
kilometres (3229 miles).
Throughout the winter she
has remained in a very small area of this tropical island;
perching mainly in one big tree in coastal woodland, not far
from the sea. Once or twice a day, she made flights of up to a
kilometre to catch fish in the South Atlantic
Ocean.
See below for details of her
autumn migration and wintering - this table will now give her
return migration. The satellite radio is working well and
giving hourly GPS fixes of her location, and also details of
her altitude in metres above sea level, and if she is flying,
the direction and speed . |
11th
March |
Her behaviour is changing in the last
couple of days. She is spending more time perched in trees
along the shoreline, and yesterday made her longest recorded
flight of the winter, when at midday she was 5.5 kilometres to
the north, flying west at 41 km/h at 66 metres altitude, while
6 hours later she was 1.5 kilometres south of her main site,
flying at 45 km/h towards her main roost tree. |
12th
March |
Logie has started her
migration!! She
roosted overnight on her usual tree; at 10 am she was perched
500 metres to the south on one of her normal daytime roosts,
then back at main roost at 11am. Maybe she had caught and
eaten a morning fish, because at midday she was 4 kilometres
to the north, very close to her position of 10th, but this
time she was flying NNE, at 50 km/h at an altitude of 258
metres. She was off!

|
12th
March |
An hour later she was flying NNE at
57km/h low over the sea to Bolama Island; at 2pm she was
crossing from Bolama to mainland Guinea Bissau 53 kilometres
from her winter quarters. She was circling and gaining height
to 233 metres. Two hours later she had crossed the wide
estuary of River Corubal, about 40 kilometres upstream from
the capital, Bissau. By now she was flying over woodlands and
villages at 564 metres altitude. At 5 pm, she had covered
another 47 kilometres NNE and was flying at 47 km/h in a
NE direction at 900 metres. Half an hour later she crossed
into SENEGAL and was just north of Lengueto. Her speed was
recorded as 80 km/h, heading NNE, but she was probably
descending fast towards woodlands 10 kilometres further north
where she roosted for the night by 7pm.
The first leg of her great
migration was 221 kilometres and she flew for just over 6
hours at an average of 36 km/h. The weather was ideal for
starting her migration; clear conditions, rising pressure and
light winds 16 km/h from the west. The temperature up to 79F.
The map shows her first
day's migration - compare the more direct heading northwards
for home, compared to the autumn migration (yellow
line).

|
13th
March |
Stayed at her overnight roost until
0900GMT, then moved 8.5 kilometres north by 10am , when flying
up a small river valley. Last transmission in this
sequence. A break in GPS readings until 2pm by which
time she had overflown The Gambia and was 17 kilometres into
northern Senegal, west of Tambacounda. The land here is
relatively low woodland and scrub, yet Logie was flying at
1145 metres, and an hour later she was still at 1392 metres in
the Matam region, but from there would have seen the Senegal
river, which she reached at 6pm, when she was flying slowly
east near Ouro Sogui. An hour later she was at her roost site
on a big oxbow lake. Her day's migration was 348
kilometres and her crossing over the river Senegal is 133
kilometres upstream from her autumn crossing. The
weather at Matam is clear skies, full sun, light 10 km/h W to
NW winds, hot at 38C. Today, 14th she should pass into
Mauritania.

13th March
migration - 348 kilometres
It's interesting she was
flying during the day at over 3000 feet above the land - not
sure why - to get a view?, avoiding harassing birds or fires,
or just for a change!

Logie's
roost site 13th - 14th March on Senegal
River |
14th
March |
Logie moved late last evening to a
roost 500 metres north; at 5 am she moved one kilometre, then
at 7-8am she was 500 metres north in the old river lakes. At
9am she was beside a small lagoon 2 kms south probably eating
a fish, because by 10 am she had started her day's migration,
being nearly 5 kms NE and into MAURITANIA, flying E at 43km/h.
She flew on slowly and at 1pm was approaching Mbout lake at 50
km/h and had climbed to 611 metres altitude. She was north of
the lake an hour later and by 3 pm she was flying over the
Massif de l'Assaba at 79km/h NNE at an altitude of 943metres.
At 4pm, she was still nearly
a 1000 metres above the surrounding land, and had crossed the
highway from Kiffa to Aleg, near El Ghayra. She continued
flying strongly northwards at 1400 metres at 50 to 78kms/h,
passing over broken ground containing villages, small lakes,
date palms but mainly semi-desert. At 6pm she was heading for
Matmata, and by 7pm she was roosting at 330 metres altitude in
remote rocky country, 80 kilometres SW of Tidjikja. Her
total day's flight was 313 kilometres. |
15th
March |
The first transmission was at
1000GMT, suggesting her roost might have been in an obscured
cliff without GPS readings. She was then perched 4 kms
north of her roost, but an hour later she was actively
migrating and had corrected her heading to the NNW. Again the
morning speed was modest, flying at 35 km/h but covering only
11 and 25 kilometres in succesive hours. Appeared to be quite
a lot of soaring flight.
At 1pm she had climbed to
over a thousand metres and had passed to the east of Ksar el
Barka. At 2pm, she had crossed the plateau and was
flying over sand deserts and big dunes. Now she started
to speed up and had flown 61 kilometres north between 3pm and
4pm. At 5pm, east of Chinquetta and was flying at 79km/h north
at 224 metres. At 6pm she had regained height again over the
next plateau of rocks and for the next two hours was at 1830
metres. Between 7pm and 8pm she had passed over a series of
cliffs to roost in sandy deserts to the north at just 278
metres. Her roost site was 47 km west of Ouadane and 66 kms
west of the amazing Richat Structure in the Mauritanian
deserts. Her day's migration was 339 kilometres. 
Roost site on
15th -16th March - how very different to Isla Roxa and her
nest site in Scotland |
16th
March |
Logie has now travelled 1442
kilometres (900 miles) in three and a half days. The map shows
this part of the migration (white line) and compares it to the
autumn passage (yellow line). It is further east into the
Sahara Desert and in autumn she took six days to fly the same
distance.

|
16th
March |
Logie stayed at her roost until 9am -
she was either tired or there were dust storms. At 10am
she was perched 800 metres NE. At 11am she was 7 kilometres
NNE, flying N at 43km/h and had gained height from 273 metres
to 1178 metres - could this be to escape dust. Over the next
two hours she was flying over sand deserts but only making 20
and 22 kilometres. The wind is given as a headwind of 19 km/h
over the desert.
There was a break in
the sequence of transmissions, and at 5 pm she was 157
kilometres further north, flying NNE at 70km/h at an altitude
of 1594 metres; she had passed 50 kilometres east of the huge
iron ore mine at Zouerat. At 6pm, she was continuing to fly
fast at 69km/h and heading NNE. She was not far from Western
Sahara and had crossed her southwards track. A GPS fix for 8pm
(received next morning) showed she had flown 23 kilometres
north and was roosting in a vast open stony desert (and was
still in the same place at 0600GMT next morning).
Her day's journey was 258 kilometres. |
|
How do we get such accurate
locations?
Several people have asked how we get our data so
quickly
Tiny satellite radios, called PTTs, have been
designed and manufactured in recent decades for carrying out
research on wildlife. We use radios, made by Microwave
Telemetry in Columbia, USA ( http://www.microwavetelemetry.com/ ). Each PTT has a unique identification number
supplied under our conservation agreement with Argos CLS, the
French Satellite Tracking company based in Toulouse, France (
www.cls.fr/welcome_en.html
). The newest radios
have GPS technology so that the positions of the bird are
extremely accurate (within 18 metres), and they also record
speed, altitude and course. A solar panel keeps the battery
charged.
The radio is attached to the bird’s back by a
lightweight harness, like a tiny rucsac, and is programmed to
take GPS readings at hourly intervals and then at intervals of
between 1 and 10 days to transmit data. CLS Argos have
satellites which circle the earth, mainly collecting
information from ocean weather buoys, and they pick up the
signals. We can connect to their website and database, and
extract our data using dedicated passwords. It’s possible to
open my laptop on my desk and receive information transmitted
an hour earlier from Africa. Then I load the data into various
different files and download one set of coordinates into the
fantastic GoogleEarth mapping system ( www.GoogleEarth.com ) – it’s all very
amazing.
The radios
are expensive (Logie's radio was funded by Talisman Energy in
Aberdeen) and for each day's data we pay a monthly charge to
CLS Argos. Donations to our conservation studies would
be very welcome for this and future projects.
|
17th
March |
Logie stayed at her roost site until
9am, then moved 2 kilometres NNE, and at 1100 was starting her
migration again, being 5 kilometres to the NE and flying at
41km/h and gaining height over the desert. No further GPS
signals until 3pm when she was 120 kilometres further north,
flying N at 78km/h at an altitude of 1214 metres. Soon she
flying over the Rich Mountains and about 4.40pm she passed the
remote town of Bir Moghrein in northern Mauritania. This is a
remote mountainous country of black rocks and enormous
crater-like depressions along the border - some travellers say
it likes the moon!
At 6pm she was flying at
53km/h at an altitude of 1964 metres, way above the land
surface, and within half an hour or so she was descending to a
roosting area just 8 kilometres short of the Moroccan border.
Here the land slopes into Morocco and there are a scattering
of bushes - on one of which she probably roosted. Her day's
flight was 305 kilometres and she had light tail winds, clear
skies and hot sun.

|
18th
March |
Signals came in
late. Logie stayed at roost until 9am, and by 10am, had moved
to perch about 7kilometres north and just one kilometre south
of the Western Sahara/Moroccan border. At 11am, she was
22 kilometres further on her migration, flying at 35 km/h NNE,
and an hour later had speeded up and was flying NE at
57km/h; then she started to climb and crossed her southward
autumn track over the Hammada desert.
At 1pm, she as flying at 62
km/h, heading just east of north at an altitude of 1543
metres. An hour later, she was 63 kilometres further north,
flying at 47 km/h at 1391 metres, so she was continuing a fast
high altitude migration (for an osprey). At this time she
would have seen the Anti Atlas mountains ahead of her, sunny
skies were clear with light westerly tail winds drifting her
to NNE.
At 3pm she was 59
kilometres further north in MOROCCO, flying 64 km/h just east
of north at 1464 metres; an hour later she was heading for
ranges of hills called Jebel Bani, south of Assa. At 5pm
turned along the southern ridges and was travelling at 86km/h,
NNE at 704 metres. Soon she crossed into ALGERIA. By 6pm
she was roosting on the south-east slopes of the ridge, facing
the desert. Her day's flight was 344 kilometres (215 miles)
over the deserts, but nowhere to catch fish.
Logie's track
leaving Mauritania, crossing into Western Samara &
Morocco, and finally before dusk into Algeria. During the day
she crossed her autumn track (yellow line).
|
19th
March |
At 8am, this morning Logie was
perched on lower slopes of the Jebel, then moved 3 kilometres
by 9am; and by 10 am had set off on migration and was 34
kilometres further on. Map of roost site shows Algerian border
in yellow on left.
 |
19th
March |
Logie crossed
from Algeria back into Morocco and at 11am was flying N at
59km/h at 628 metres; she continued north and two hours later
was flying at 87km/h at 1102 metres. By 2pm she had dropped
down into a valley before climbing again to 1294 metres by 3pm
and was heading north for Ouarzazate with its large freshwater
reservoir lake. At 4pm she was flying over the lake,
presumably desperate to catch and eat a fish, the first since
leaving the Senegal river 5 days earlier on the morning of the
14th March. At 5pm, she was perched on the north shore of the
big reservoir, probably eating a fish and then she back south
to roost two kilometres out into big dunes in the
desert. She has successfully crossed the great Sahara
Desert again and now heads into the Atlas Mountains. Her
migration continues and today's flight was 308
kilometres.
Ouarzazate is an important
Moroccan town to the west of the lake; a busy place for
travellers and known as the 'door of the desert'. It's close
to the Atlas mountains and the Draa valley; and lies at 1160
metres above sea level. Last night high clouds had extended
over the mountains; and today the weather at the lake is
partly cloudy, clearing to sun later, with light west winds
16km/h and temperature of 68F/20C. |
19th
March |
At dusk she moved 6 kilometres SW to roost along
the side of a small river with scattered trees and bushes.
Interestingly, this was within 50 metres of where the Finnish
male osprey Pete roosted overnight on 11th/12th October 2007.
He wintered in the Senegal but has not yet started his return
migration.
See Pertti Saurola's website for
details at www.fmnh.helsinki.fi/english/zoology/satelliteospreys/index.htm |
20th
March |
Logie
stayed at her roost until 8am, then at 10am she was perched
5.4 kilometres north, just south of the lake at Ouarzazate.
Possibly she had fished by then. At 11am, she was 26
kilometres north flying north up over the High Atlas
mountains, she was flying NW at 69 km/h and was at 1708
metres. She was heading for lower passes west of the highest
mountains which rise to 4000 metres. An hour later she had
passed a high level lake and was flying at 59km/h at 1027
metres. At 1pm she had descended to 294 metres altitude and
flying over green valleys near Abaddou, but still keeping up a
fast speed of 60 km/h.
At 2pm, she was 42
kilometres further north, flying over farming lands near Oulad
Ougal and was again gaining height to 1050 metres. Over the
next two hours she travelled 102 kilometres N and was flying
between 1793 and 1115 metres. She then dropped down to roost
about 15 kilometres SE of the city of Khouriba, the centre of
phosphate mining.
Her day's migration, see
map, was a dog leg to avoid the highest mountains of the High
Atlas, but she still covered 243 kilometres. The weather was
cloudy in places and the wind light. The forecast for 21st is
cloudy with showers, with light variable winds, temperature
12C.
She is about 370
kilometres from the Straits of Gibraltar so she might cross
there on 22nd March if the weather is good. Fernando Gavilan
emailed last night to say that it was very rainy today at the
Tarifa raptor migration watch centre and just one osprey and
some other raptors crossed the Straits into Spain, but on 19th
there were several thousand black kites and 4 ospreys. It
would be exciting if some of the migration observers identify
Logie migrating in Spain.
 |
21st March |
Logie still at roost 6am
but no further signals until 11am. Weather cloudy with
showers, light west winds. Overcast might result in solar
battery not charging fully. By 11am she had flown 82
kilometres north and was near Sidi Legchiche. GPS signals
started again at 1pm when she was a further 74 kilometres
north, flying NNW at 39km/h, about 20 kilometres east of
Rabat. An hour later, she was near Sid ali el Moudene, flying
NW at 26 km/h, suggesting she was flying into the wind. At
this stage she was close to her autumn track, but by 3pm she
had veered more to the NE and was flying E near Sidi Azzouz at
60km/h at 549 metres - over the cultivated lands of northern
Morocco. At 7pm she was near Ouezzane and was 16 kilomteres
from the large reservoir lake Qued-el-Makhazine. She roosted
in wooded hills 15 kilometres east. Her day's flight was 281
kilometres.
She is now 125 kilometres from the
Straits of Gibraltar.
|
22nd March |
The weather in northern
Morocco and the Straits is cloudy, with rain showers and a
fresh to strong west wind of 50km/h. Logie was at the
tree rost from 4 to 7 am, and then at 8am, Logie was 200
metres north of the roost, flying NNE at 66 km/h over wooded
mountains between Arhtites and Assara. An hour later she was
27 kms north, flying at 50 km/h NNW near Menorka, and at 10am
she was crossing wooded hills between Jebel Kereha and
Jebel Bohassin and flying N at 58 km/h, at 1832 metres. She
had gained a lot of height and looked determined to cross the
Straits. A report this morning from John Cortes on Gibraltar
said the wind was strong westerly.
At 11am she was over the sea just north
of Cabo Negor heading parallel to the coast towards Ceuta; she
was flying at 42km/h NNW at 56 metres over the sea. The wind
drifted her east and an hour later she was out in sea 36
kilometres east of Gibraltar and had travelled another 58
kilometres. She was flying at 63 km/h to the NNE at just 17
kilometres over the sea. This was a hard crossing of the
Straits and thank goodness there were no yellow-legged gulls
to harass her. At 1pm she had reached the Spanish coast just
north of Fuengirola and had changed heading to north and was
flying at 82 km/h and gaining height into the hills.
Later note: John Cortes of
The Gibraltar Ornithological and Natural History Society
writes" The 22nd saw relatively low passage - as it was so
windy we suspect that, like Logie, quite a lot of birds passed
well to the east of Gibraltar. We did have about 200
Black kites, and a variety of other species, including 5 Marsh
Harriers, 7 Egyptian Vultures and some Black Storks and White
Storks - and 2 Ospreys." While Luis Barrios, Director of
Fundacion Migres, which monitors raptor and stork migration
across the Straits to Tarifa and Cazalla, reports "a very poor
day for passage - just 3 black kites, 2 short-toed eagles and
an Egyptian vulture. This compares to 1220 migrants on 20th,
321 on 21st and 173 on 23rd, mainly black kites. Single
ospreys on 20th and 23rd."
So Logie crossed on
a very poor day for raptor migration from Africa to
Europe.
At 2pm she was in the hills of
SPAIN, north of Marbella. She was over
Cerralba,just south of Pizarro flying N at 40km/h at 404
metres. By 4 pm she was flying over the waters of the
reservoir lake, Embalse de Conde de Guadlahorce. One of three
lovely lakes in the mountains about 25 kilometres SW of
Antequerra. She was probably fishing over the lake, because at
5pm she was perched on a hillside of olive trees on the south
side of the reservoir and may be was eating a fish. She
roosted about 500 metres north in woods above a bay
inlet.

The day's migration was 281
kilometres. The weather at Marbella was light rain,
cloudy with light SW winds; temperature 47F/8C; (the winds at
Gibraltar were 50km/h). The forecast for her location tomorrow
is clear skies and sun.
It's great that she has got back to
Europe after another successful crossing of the Sahara Desert.
She has still has at least 2300 kilometres (1425 miles direct
line) to go before reaching her nest here in Moray. That's
about 8 - 9 days in good weather, but there is a very cold wet
and windy weather system over the UK and France. Here near her
nest, it's been very cold, with strong NNE winds and frequent
snow showers today.
This is the reservoir lake
of Embalse de Conde de Guadalhorce, where she was almost
certainly fishing at 4pm, and probably eating a fish perched
on hillside above the lake at 5pm, and then her
roost. |
23rd
March |
Logie was
roosting above the lake from 6am to 8am. Fernando
Gavilan knew she was at the lake last evening. He emailed
today to say " I was at the lake at 6.30 am GMT, very near
where you reported the osprey. At 7.28 am GMT we saw a bird,
possibly the osprey a long way from us over the water. At
8.59am GMT, we saw an osprey leave the dam area of the
reservoir and fly low over the water about 300 metres from
yesterday's location, and we lost it above the edge of a
swamp. I am enclosing a few photos." Many thanks
Fernando for finding Logie and sending photographs of the
reservoir.
From our later data,
Logie departed from the site about 9.30GMT. A
fisherman's website reports that this reservoir is very good
for barbel, carp, nase and pike - a good feeding site for
ospreys.
Fernando's photos from today - Embalse de
Conde de Guadalhorce. Right photo is roosting
area |
23rd March |
Logie at roost until 8am
GMT. At 10am, she was flying north over the Flamingo
Lake at Funte de Piedro and an hour later has crossed the
Malag - Seville highway and was near Casariche. At 12am, she
was 66 kilometres to the north, flying at 45km/h north at 699
metres near Aguilar de la Frontera. An hour later she was 28
kilometres north, gaining height to 1096 metres and had just
passed over Espejo, SE of Cordoba. She flew another 27
kilometres in the next hour. At 3pm she was flying north at
56km/h over the mountains, and passed through the hills at 4pm
near Fuencaliente. She was at 1298 metres and kept this height
going across the plains to Puertollano.
By 6pm GMT she had passed over the
Sierra Morena, and was flying NNW at 33km/h over wooded hills
about 25 kilometres south of Cuidad Real. She had not yet
stopped to roost. Her day's flight at this time was 217
kilometres. She was flying over areas that I know from
visits to Andalusia - I wonder if she saw an Iberian Lynx
on her travels - a beautiful animal I failed to see in
the Sierra Morena. At 1900GMT she had stopped to roost
in a wooded hill top two kilometres further north.
|
24th March |
Only one signal in so far
- she roosted on a wooded cliff above the Tajo river, above
the lake Embalse Entrepenas overnight 24th/25th March. This is
remote country 5 kilometres south of the Trillo Nuclear Power
Plant. Juan Prieta tells me it is a favourite river valley for
ospreys and cranes.
The weather forecast (today 25th) is
sunny with clouds & light N winds, but cloudy and rainy
with stronger N winds in North Spain. |
25th March |
Logie still at roost at
0800GMT, moved 300 metres beside river at 9am. At 10am
was 16.8 kilometres N flying NW at 31km/h at 1197metres north
of Cifuentes. At 1103GMT, Logie was migrating north 42
kilometres north of the Tajo roost; she had just crossed the
Madrid - Barcelona motorway and was 8 kilometres SE of
Siguenza. At 1300GMT she at 1195metres near Medinaceli and an
hour later was flying NNE at 56 km/h at 1584 metres SE of
Soria. By 4pm eas flying at 14km/h N near Valdeperillo and an
hour later was roosting beside a small river 25 kilometres ENE
of Logrono. Day's flight was 188
kilometres. |
26th March |
Logie was at roost at
0400-0500GMT, at 9am she was 14 kilometres north past Los
Arcos; at 10am she was flying N at 41km/h at 933 metres. At
1200 GMT she was flying west at 21km/h over Zumala on the
coast of the Bay of Biscay. An hour later she was perched for
several hours at the bottom of the cliffs about 3 kilometres
to the SW. At 1634GMT she was a further SW inland from
Lekeitio. The day's flight was 113 Kilometres. The weather was
rain and clouds, with 13mph west winds, which was not suitable
for setting off across the sea. The forecast for tomorrow in
heavy rain and west winds, so she may be delayed on north
coast of Spain.

Logie's migration
to Bay of Biscay on 25th 26th March |
30th March |
Just home from helping to
host a 3 day beaver conservation study tour in Bavaria and
neither of our rural hotels had wireless internet connections
and two other possibilities, in our hectic (and very
interesting) tour of beaver sites, had wireless internet but
did not know their passwords - so this evening a rapid look at
Logie's position. My sincere apologies for the break in
updating Logie's webpage, and especially sorry to those who
were worried she was lost at sea.
After reaching the Bay of Biscay coast,
there has been a series of cloudy, rainy days with westerly
winds, and she has decided to wait for better weather before
heading north. Logie has been on the coasts north and east of
Bilbao in northern Spain. Most days she has been around the
estuary of the River Mundaka which runs into the Bay of
Biscay, from Guernica. It looks a very good place for fishing
ospreys. As soon as the weather improves she should head north
and I'm pleased that I can now update regularly the rest of
her migration.
Either later this evening or tomorrow
morning I will fill out the details of her sojourn on the
Basque coast. The weather there this evening is still
rainy, with heavy showers, overcast and light west
winds. |
30th March |
Logie spent all of Sunday
30th March around the Mundaka estuary. She was roosting in
trees on the eastern shore at 0400-0500GMT; then moved east in
to the forest for a couple of hours. At 0800GMT she was in mid
estuary, and then spent the rest of the day in trees at the
north end of the forest. At dusk, she was roosting in the
south of the forest, two kilometres from the estuary.
|
31st March |
Logie has spent another
day around the Mindaka estuary, which is called the Urdaibai
Biosphere Reserve. At 0400GMT she was roosting in the hill
forest north of Kanala, an hour later closer to the estuary;
then back in the hills 0600-0700. She moved a kilometre north
for three hours, then back near roost, before flying our into
the estuary, north of Isla,at 1600GMT; finally she moved SE in
to the forest again. It was rainy most of the day. Tomorrow's
forecast is similar with showers and light west winds in
northern Spain and SW France; clearer sunny weather is
forecast for Wednesday - may be she will move on soon.

Urdaibai Biosphere Reserve
- Logie's movements on 31st March
The Urdaibai Biosphere Reserve is located
in the Euro Siberian region, on the Bay of Biscay coast, in
the north of the Iberian Peninsula. Urdaibai covers an area of
220 km2 with around 45.000 inhabitants, the 80% of them
concentrated in the towns of Gernika and Bermeo. The territory
is characterized by a hydrographic basin that ends creating a
great salt marsh and a coastal landscape with high sheer
cliffs and capes. The craggy inside countryside is occupied by
meadow land, oak groves, leafy woods and specially by
fast-growing conifers. The coastal landscape is covered with
cantabrian woods of holm oak and strawberry trees, along the
edges of the Mundaka estuary. In Urdaibai have been described
615 species of vascular plants, 318 species of vertebrates,
245 of this species are birds. Along with the rich Basque
culture, the site has a particular interest, since it contains
various remnants of the prehistoric, roman and Middle ages.
The economy leans heavily on metallurgy, fishing/ maritime
activities and forestry, and on the exploitation of local
resources (arable and cattle farming). There is also a tourist
trade, centred mainly on the local beaches, the historical
towns (Gernika) and the natural environment. The area is
implementing a management and land use plan and a development
plan including socio-economic aspects and promoting
sustainable activities such as quality tourism, agriculture
and forestry.
Big news at home is that a male osprey
was on Logie's nest at 11.30am and was almost certainly her
mate from last year, although I did not identify his colour
ring before he flew off, almost certainly to fish. It
looked as though he had just arrived from migration - in
excellent bright plumage but looking very empty and hungry.
The male in the next nest also arrived today.
|
1st April |
Logie stayed at Urdaibai
estuary area all day - she was at her southern roost on east
side of estuary, north of Isla, until 0500GMT, and then again
from 1800 to 2000GMT; no transmissions in early morning when
probably hunting; then from 0900 to 1400GMT she was at her
northern perching area in forests north of Kanala. The weather
was wet and cloudy, so she was still waiting, but forecast for
2nd April is clearing with sun and showers, and rain showers
ceasing in afternoon, with very light north winds. This is for
the Basque coast and the SW French coast. So at last she might
continue her migration. Several people emailed telling me
about the area - the outer estuary is a great surfing
beach.
Today, there was a 'pair' of ospreys on
Logie's nest - the female, green ring 5B, was from the next
door nest and the male, red 7J, was a bird I ringed as a chick
about 20 miles away in 2001. Another male was displaying
with a fish over nearby forest. |
2nd April |
Logie was at the south
roost early morning and at 12.30pm was one mile east of the
estuary. Richard Gallagher emailed to say he looked for
Logie on Monday 1st April without luck - he has regularly seen
ospreys in the estuary on spring and autumn migration, with 5
in a day being his highest count. He said grey mullet was the
favourite food. Later in the day, the warden of the
reserve, Aitor Galarza emailed to say he looked for Logie
while on the reserve between 1030am and 1.30pm, but did not
see her. He sent the following photograph of the estuary, that
Logie has frequented; taken at 11am.
Urdaibai Biosphere
reserve - photo by Aitor Galarza |
3rd April |
Logie was in the usual
southern roost in the early morning; but at 10am local time
was 14 kilometres to the west near Mungia. An hour later she
was back on the estuary, and in mid afternoon was about a mile
west. The weather has improved so she should restart her
migration.
Jose Mari Unamuno of the Elaia Bird
Migration Centre watched Logie fishing in the estuary on 1st
April. He said she was shy and harassed by yellow-legged
gulls, but in the end landed on the mud and ate the fish. He
sent several photographs and I enlarged one , which is shown
below, of Logie eating a fish in the estuary at low
tide.

There were no ospreys on
Logie's nest yesterday or today. |
4th April |
At northern roost in
forests 5 to 6am local time; on shore of estuary close by 7am
to 9am; then moved to south end of estuary in two
locations to 2pm. Forecast is for sun tomorrow so may be
she will move. |
5th April |
She was in the western
side of estuary near Busturia at 7pm last evening local time;
and on the north-east shore opposite Txatxarramendi at dawn.
Weather now perfect for onward passage - bright sun, clear
skies and light or nil wind. She has had a ten day stop-over
in poor weather but should have caught plenty of fish. Next
transmissions due this evening.
She actually stayed put - may be she
sensed how bad the weather was further north. In the morning
she was in the north roost, and during the afternoon and
evening was in woodlands at the SW side of the estuary, inland
from Mureata. |
6th April |
The signals showed she was
still at Urdaibai estuary reserve this morning. Today in
northern Scotland, there are strong north winds with snow
blizzards, and many osprey nests will be covered in snow -
there were no ospreys at Logie's nest.
Then at 6pm, I received the following
email from Aitor Galarza, warden of the reserve, along
with the enclosed photograph of Logie eating a
fish.
Hi: Great and beautiful! Logie was
eating at 12:00 on the muds of the right part of the estuary
(Kanala). She begins shouting when I approach to her although
she couldn´t see me because I was inside the wood. I could see
the transmitter and the white ring with AN. I have taken
some pictures that I send you. When I left her, at 12:30
she continued eating. She seems to be comfortable in our small
estuary. I dream with ospreys nesting here one
day. Yours Aitor Galarza

Aitor: Thanks very much
for the photograph and the red-hot news of Logie.
After looking at the
photograph, she looks quite hungry to me, obviously the
migration journey has already been long and arduous; but the
heavy rains last week would have made it more difficult to
catch fish in the estuary. Richard Gallagher mentioned the
problem of murky water when rivers run high, in his email, and
we see the same in Scotland when heavy rains turn the rivers
Spey and Findhorn brown and the fish are hidden. So she
needs to feed up now, ready for the next stretch home once the
weather improves. |
7th April |
Signal at 7am local time
showed Logie in mid estuary - presumably getting the morning
fish. Weather forecast for north Spain is partly cloudy; then
rain for tonight, Tuesday and Wednesday, which is not good
migration weather. But Logie got through before the change in
the weather ahead of the clouds!
At 5-6am local time she was at the
south roost, then at 7am in the estuary (presumably fishing);
at 9 am she was at the north roost in the forest. An hour
later she was several kilometres NW of the estuary flying SW
at 39km/h at 450 metres, presumably gaining height. Because an
hour later she was 24 kilometres SE near Madalena and at
midday was skirting the western slopes of the Pyrenees, flying
at 35 k,m/h at 634 metres near Altzola. An hour later she had
flown into FRANCE, and was flying NE at 58 km/h near Monte
Aldura.
By now she had cut the corner and was
turning northwards; at 3pm she was near Saint Jean-de-Luz
flying NNE at 33km/h and had levelled out at an altitude of
52metres following the coast. She was 22 kilometres further on
an hour later inland of Penon. At 5pm local time she was
flying NNE at 33km/h near Vielle-Saint-Girons and the last
signal at 6pm was at Mimizan, when she was flying N at 40 km/h
at 123 metres altitude. She still had at least an hours flight
before dusk.
After 11 days at Urdaibai, her day's
flight was at least 196 kilometres and she made a perfect
circuit of the Bay of Biscay coast, with no attempt to fly
across the sea. The weather in Spain was getting cloudier with
rain in the Pyrenees, while ahead of her France was in clear
skies. Now to see how quickly she gets back home. Still
dreadful cold snowy weather in Scotland and an afternoon check
of six local nests found no ospreys.

|
8th April |
On the evening of 7th
April, Logie moved another 4.5 kilometres north to roost
beside a forest track in a coastal pine plantation. Next
morning, she was at the roost at 5am and 6 am local time. At
7am she was between Biscarrose-Plage and Lac de Cazaux, flying
north at 38 km/h at 76 metres altitude.
The next signal was at 11am and she 55
kilometres further north and had passed Cap Ferret, and was
flying north at 53km/h into a light NE wind. An hour later she
was perched at the south end of a coastal freshwater lagoon
called Etang de Carcaus, and at 1pm was flying at 36km/h NNE
at the top end of the lake. An hour later she was perched
overlooking coastal dunes, and then she was north of
Montalivet-les-Bains, before heading north over the sea
between Cordonan Lighthouse and the mouth of the river
Gironde.
She reached the north shore at 4pm and
turned NW to follow the coast north. At 5pm she was perched in
a coast forest plantation, and an hour later had moved a
further 1.5 kilometres north to a night roost in a conifer
plantation beside a track about one kilometre from the sea.
She was on the peninsula west of Tremblade, and south of Ile
d'Oleron. During the day she had flown 170 kilometres north in
poor conditions with a light to fresh NE wind - poor
conditions for migration.
|
9th April |
She was still at her roost
at 5am local time - the last signal of this batch of
transmissions. Weather for today is again poor, with rain
showers and fresh north to north-east winds; fairer conditions
in Brittany. Another difficult day for migrating.
Last evening, after the rain cleared
for a while, we checked Logie's nest and found the new male
red/white 7J eating a big fish on a branch above the nest. The
nest showed signs of building so he seems to be in occupation,
because Logie's mate has also not yet returned to Scotland.
This male was first seen at this nest on 1st April, with a
female green/white 5B but she is now at her last year's nest
with her regular mate. So another osprey season starts - but
rather slowly in the cold wet snowy weather.

Logie's migration route
through Spain and France to 8th April |
9th April |
A difficult day's
migration in poor weather conditions. Rain, north-easterly
winds and poor visibility on the French coast. Logie was at
her roost until 8am local time, and an hour later was perched
close to the shore at the north end of the peninsula. At 10am
she was on Ile d'Oleron flying west at 51km/h just 24 metres
along the shore. At 11am she was perched beside fish farms
west of La Bree-la-Bains. At midday Logie was flying N at
30km/h at 17 metres over the sea. At 1pm she was perched on
the shore of Ile d'Re and then moved up the island to the
north end. At 4 - 5pm local time she was perched near fish
ponds, and then roosted overnight in scrubby woodland close to
the coast. Her day's journey was 42 kilometres.
|
10th April |
Logie still at roost at
dawn on last signals of this batch. Today's forecast is again
poor for the French coast, with light rain, partly cloudy and
early morning fog at her location; heavy rain to the south and
better conditions to the north in Brittany. These are hard
conditions for migrating birds, whether ospreys or swallows,
returning to northern Europe.
A signal at midday local time gave a
position 2 kilometres east of the island suggesting Logie was
migrating to the mainland coast. The weather has improved in
France and several contacts reported by email that she should
find better conditions into Brittany.
Here in Scotland, Logie's mate from
last year, colour ring black 6R, arrived at their eyrie today.
At 7pm I found him on the old nest, presumably after getting
rid of the intruding male - red 7J. BUT there was
a female beside him soliciting for food - and after watching
for fifteen minutes I could see that it was an old female with
just a metal ring on the right leg. This appears to be the old
female, from another local eyrie, which lost its long time
mate in the winter 2006/2007. She is definitely over 15
years old, and possibly an ancient bird approaching 30 years
of age. It would be really interesting to know her ring
number, because she lost her colour ring a long time ago. 6R
was too busy renovating the nest to bother about fish. It's
about time Logie got home! |
11th April |
Big worries this morning
as no signals came in before I had go out. But good news when
I got back - Logie was flying north in the afternoon.
She stayed on Ile de Re all day
yesterday, visiting several parts of the island before
roosting for the night about 1 kilometre SW of the previous
evening's night time roost. This was just north of the
shellfish farms. Viv Leigh emailed in to say the weather
wasn't too bad though cold 9C; and that the fish pens are
mainly for oysters and mussels. I was worried she might have
got into trouble in a fish farm, but she would not bother
shellfish!
She left the island just before 10am
local time, when she was flying NE towards the mainland at
54km/h, just 26 metres above the waves. The wind being fresh
westerly. An hour later she was perched on oyster poles
on the low tide shore at Sainte-Anne. At midday Logie was 15
kilometres north, flying NW over Revroc at 41km/h and had
gained height to 305 metres. At 1pm local time, she was 23
kilometres nearer home, flying due north at 65 km/h and was at
an altitude of a thousand feet. Another correspondent, Elaine
Clark , emailed to say it was a fine sunny morning but had
turned windier with some hail showers. At this stage, Logie
was 330 kilometres south of the tip of the Cherbourg
Peninsula.
At 2pm, she was 35 kms NNE flying north
at 69km/h; an hour later she was near Beaupreau, flying NNW at
37km/h at 590 metres altitude. Just before 4pm she passed low
over the river Loire near Saint Florent-le-Vieil. She reached
her roost before 6pm and had flown 211 kilometres during the
day. She roosted in a line of trees in farm land just 2
kilometres SE of Segre.

|
12th April |
Logie was still at her
roost at 6am local time. An hour later she was 7 kilometres
north, flying NNW at 35 km/h, and at 8am she was perched in a
large field in open ground 14 kilometres to the north - there
were small ponds in the area so she may have been eating a
fish. At 9am she was flying NNW at 36 km/h near Laval, and an
hour later flying NNE at 58km/h heading for
Lassay-les-Chateaux.
I received an email at this time from
Steve Nuttall, with a photo of Logie's roost area on Ile de
Re; he said it was a glum cool day with rain forecast in La
Mayenne. He had seen an osprey once near his home - at a lake
at Fontaine-Daniel - Logie passed 6 kilometres to the east of
this lake at 9.45am.
She was near Sainte Andre-de-Massei at
11am flying NNW at 62km/h; and an hour later near
Campandre-Valcongrain circling over a ridge of hills. At 1pm,
Logie was 3 kilometres south of Bayeux flying NE at 84
km/h at 108 metres altitude. She cossed the French coast
just east of Port-en-Besin on the Normandy coast and at 2pm
(3pmBST) she was kilometres over the English Channel flying N
at 61 km/h at 930 metres (again she crossed a coast at high
altitude - to avoid gulls?). An hour later she was 66
kilometres further on in mid Channel flying NNE at 52 km/h
just above the waves. At 5pm, she was 62 kilometres further on
and was flying at 75 km/h just 13 metres above the water. The
SW winds were pushing her on but also drifting her
north-eastwards.
Logie finally arrived in ENGLAND at
5.45pm, arriving just about over Brighton west pier, at 6pm
she was flying N at 40km/h above Keymer, south of Burgess
Hill. At 7pm Logie arrived at Ardingly reservoir, and at 8 pm
was perched in trees on the west side of the North Arm of the
reservoir. Her day's flight was 360 kilometres. The
weather had been grey and partly cloudy, 10 kilometres
visibility and fresh SW winds of 24km/h. She had done well to
cover such a distance in gloomy conditions and the wind had
drifted her east of her northwards track.
David Plunton saw two ospreys near
Winchester at 10.15 am today and Nick Bond posted a sighting
of an osprey over Littlehampton, so it appears other ospreys
were crossing the channel.
Logie now has 780 kilometres to fly to
reach her nest and it appears she will travel up the eastern
side of the country. With luck she'll reach home on Monday -
but it's fresh north winds, rain and snow showers up here -
but at least the intruding female was not at her nest
today.

Logie's track across
France and the English Channel 12th
April |
13th April |
Logie roosted overnight on
Ardingly Reservoir north of Haywards Heath in Sussex, this was
16 kilometres further north. She was in the nature reserve
section, where ospreys are sometimes seen on migration. The
map shows her position in the lake - hope bird-watchers there
see her fishing this morning before she heads north.
It looks reasonable weather for
migration, light winds, some rain showers, but gloomier in the
north. If she leaves after fishing she might reach Yorkshire
by dusk, passing west of London, and near Rutland water about
1pm. |
13th April |
Just been to her nest; and
all is ready there. Her mate 6R (from the black colour ring 6R
on his left leg) was perched in the dead pine above
their nest eating the final tail bit of a small trout at
0837am. A lovely quiet morning, a nip in the air, early
morning gloom starting to clear to blue patches. A mistle
thrush singing loudly near the eyrie and pheasants calling
below. No sign of the intruder females.

Logie's mate - Black 6R -
eating a fish above nest at 0837am
There will be no more
updates of Logie's position until late evening transmissions
from the satellite
My monitoring of osprey
nests today found 10 adults back at 11 nests so it is a slow
start to nesting. |
13th April |
She was still at Ardingly
Reservoir at 9am. An hour later she was flying at 52km/h NW at
622 metres altitude just south of the M25 motorway, north of
Leatherhead. She turned NW and at 11am was perched on the SW
side of the Queen Mary reservoir near Staines. She was still
there at midday although slightly different place so she may
have fished. Then she flew one kilometre west to perch in
trees on farmland near Laleham at 1pm and 2pm. She then flew 5
kilometres west, passing over the M25 again just north of
Junction 12 to perch in big trees on edge of field close to
the main rail line, north of Virgina Water. She stayed here
from 3pm to 5pm, and then moved 600 metres to roost in big
trees in the main wood. She was still there at 9pm.

The weather yesterday was variable,
rain showers, cloudy at times, which may be why she did not
head north. Further north there was more rain, and even snow
in Scotland.

Logie's travels around
Staines and roost near Virginia Water |
14th April |
Today's forecast gives
early morning fog clearing to partly cloudy with sunny spells
and rain showers, getting less sunny further north, with fresh
cold NW winds. Hopefully, Logie will head north but it's
difficult to predict how far she will travel. At least one
female osprey called by at Rutland Water yesterday, and she
may pass that way today. May be someone will sight or
photograph Logie on her way north. Thanks to those who
looked yesterday.
An email just in this morning from Sue
Halket, explains Logie's delay yesterday. "I am not surprised
that Logie didn't fly far yesterday. We had horrible
conditions with thunder, lightening and hail storms. I
wondered during the day if she would fly in such conditions
and vaguely looked for her flying through as we are to
the west of Heathrow".
Logie was still at her roost at 8 am
and then, at 9 am, was perched on the south bank of Virginia
Water, presumably fishing. At 10 am, she was flying NNW at 32
km/h, north of Englefield Green and at 11 am, she was as
below!
Oops! A GPS position at 11am gave
Logie's position as flying NW at 22km/h at 500 feet over
Terminal 4 at Heathrow airport - hope she got clearance to
cross the runways safely! She must have been fishing in the
reservoirs to the south and is now heading north.
Google picture of Logie's
position at 11am - remember Google pictures are not today's
images so this may not be exactly what she saw as she headed
across the airport!
At midday, she was flying WNW over the
northern outskirts of Maidenhead, and then crossed the River
Thames at Henley-on-Thames. At 1pm, she was flying SW
over Sonning Common, at 439 m altitude. An hour later, she was
perched on a wooded island beside the Thames, just below the
road bridge between Goring and Streetley. At 3pm, she
was flying SE near Lower Basildon, and then at 4pm was flying
back NW, back and forth along the river. At 5pm, she was
perched in woods besides the Thames, south of Goring, and an
hour later had flown south, perched, again by the river, near
Beale Park. She roosted overnight in woods on the
eastern side of the river. |
15th April |
Logie spent last night
beside the Thames north of Pangbourne; she was still at
the roost at 4am, but by 5am was downriver, just NW of
Whitchurch-on-Thames, and spent the next few hours around the
river, up until 9am.
At 10am, she was on her migration once
more, and was flying west at 33 km/h, near West Hagbourne,
before passing over Didcot power station. At 11am, she
was flying west near Eynsham, and then went over Chipping
Norton to be near Little Rollright at midday, when she was
circling at 245 m. She then turned west, and at 1pm was
perched in a field just south of Barton-on-the-Heath. At
2pm, she was flying west at 62 km/h, east of Evesham, and had
climbed to 1334 m altitude. With rain showers during the
day, she was probably finding the flight difficult, and at
3pm, was perched in a wood beside the A441, north of Redditch,
a little south-east of Rowley Green. Awaiting further
signals! The forecast at the moment for the Midlands is
rain showers with south-easterly winds. During the last
two days, Logie has covered a distance of 188 kms.
Latest news: see below.

Logie's journey on
14th and 15th April
7.30pm Logie is still at the wood near
Rowley Green, south of Junction 2 on the ring road below
Birmingham. I telephoned a friend in Birmigham and he told me
it was pouring with rain at 7pm so I can understand why she
has stayed put. The forecast for tomorrow is better. The
nearest places for Logie to fish early tomorrow are the
Bittell reservoirs, 2 miles NNW, or possibly Earlswood
Lakes 5 miles ENE. Hope she is seen on her way north
tomorrow.
Logie's roost site evening
15th April
|
15th April |
Logie's progress over the
last few days has been slow, almost certainly due to poor
weather conditions. It is interesting that she has moved to
the north west, where she will pick up the direct line from
Cherbourg back to Scotland. It's interesting that ,
having been blown eastwards by bad weather in France and the
English Channel, she did not redirect from Sussex straight up
the east side of England, but went back to what was probably
her planned track. The map below shows her probable
flight line if she had not been drifted east via Brighton.

|
16th April |
This morning, Edwood
Walker emailed to say he had looked for Logie:
"I went up there for a look around this
morning between 6.15 and 8.00. If the fix from yesterday was
correct she was on a ridge in a patch of oak bluebell wood
which belongs to the Methodist Church. The Weather got
progressively foggier the longer I was there and I didn't see
her, if indeed she was still there. Still damp, overcast and
misty here (10.45am) but visibility is gradually
improving".
The first data came in at 5pm and
showed that Logie did indeed move position late last evening
and roosted beside a small lake with trees about a kilometre
SW of the last position. At 11am she was perched at the south
end of Lower Bittell reservoir, and then spent the afternoon
on farmland and trees about a kilometre to the SW, between the
railway line and the motorway.
Just after I got this data, an exciting
email came in from Mary & Jack Lindsey, with news that
they had seen and photographed her at Bittell reservoir in the
morning:
"Thanks to your itinerary, we were able
to take a chance and get to Lower Bittell reservoir at 7.30
this morning - just in case! We didn't expect much to happen
as it was even foggier there than at home. Our delight was
worth everything when, at 10.25ish Logie appeared!!!!!! We
only saw her intermittently for about 10 minutes, then
presumed she had either caught something or moved out of
sight, so we left to get warm!
Have attached a couple of pics Jack
took. She was a long way off, and it was very poor photo
weather! At least the aerial is visible in one. After all her
trials, the gulls wouldn't leave her alone. I took a bit of
(very amateur!) film, but it's too long to e-mail, I'm afraid.
It was marvellous to see the bird we've been following for so
long". Their two photos are shown below.
Thanks to Jack &
Mary for the great photos - being mobbed by gull on
right
A signal at 6pm showed that Logie had
moved south, to the west of Alvechurch. After fog in the
morning; the weather is partly cloudy with a 9mph NE wind.
Hopefully, she'll fish in the morning then head
north! |
17th April |
At 5am Logie was roosting
in a wood beside the M42 north of Alvechurch. Weather this
morning near Birmingham is clear. Still there at 6am, then
just NW of lower Bittell reservoir at 7am. This was confirmed
by Rob who saw Logie fly over Lower Bittell reservoir at
6.10am but she did not fish there; then at 8.20am he saw her
perched in at tree to the NW, so she may have fished at the
other lake, then at 8.30am she flew off north in clear
weather. Craig Round saw her circling the Clent Hills ten
minutes later being mobbed by crows, and she then went off NNW
avoiding Birmingham. A fresh east wind. How far will she go
today?
At 9am, she was 17 kilometres NW of
Bittell reservoirs flying WNW at 59km/h between Stourton and
Wollaston; an hour later she was 31 kilometres further NW
flying at 74km/h WNW at 519 metres just NW of Iron bridge,
near Telford. She passed Shrewsbury and at11am was 41
kilometres further NW flying at 48 kms/h about 5 kilometre NW
of Oswestry. By midday Logie had passed into North Wales and
was now flying north at 51km/h at 270 metres two kilometres SW
of Mold in Flintshire. She was flying strongly to the NW
through the morning with a fresh east wind, up to
30km/h.
At 1pm Logie was flying over the centre
of the Dee estuary at 638 metres above sea level, flying N at
85km/h about 2.5 kilometre from Caldy. She then flew up
over Liverpool Bay, being 17 kilometres west of Southport at
2pm, flying strongly N at sea level; and hour later still at
sea level she was flying at 39km/h N 7.5 kilometres SW of
Walney Island. She then came ashore and at 4pm was flying N at
35km/h near Hallthwaites in the southern Lake District. She
now turned NE and an hour later had flown a further 21
kilometres and was just S of Little Langdale flying SSE at
57km/h. At 6pm Logie was perched beside a small river and
pools east of Skellwith Bridge just south of the road to
Ambleside. Then she flew 6 kilometres SE to perch on the west
shore of Lake Windermere. An hour later she was 400 metres
further south along the shore where she roosted, due west of
Hawkshead.
Her day's flight was 280 kilometres,
the first part coping with a strong easterly wind, may be it
was the wind which drifted her NW or she may have wanted to
pick up the track of her autumn flight over the sea to the
Lake District. No more data until tonight.

Logie's flight 17th
April |
18th April |
Logie was was still at her
Windermere roost at 6am, but by 7 am she was 16 kilometres to
the NW, suggesting she started her migration at 6.30am. She
was one kilometre SW of the south end of Thirlmere, flying NW
at 66km/h over the Lakeland hills at 653 metres altitude. She
left the Cumbrian coast, just north of Maryport, and at 8am
was 8 kilometres out in the Solway Firth, flying NW at 42km/h
towards the Dumfries-shire coast 20 metres above the sea. She
carried on across the Firth, being drifted west and landed on
the southern shore where she rested for an hour. At 2pm and
3pm she was at her autumn fishing site at Loch Kinder (see
last autumn's first stop-over). She spent the night in woods
to the NW, not far from where she spent 5 weeks on a stop-over
last August. But she does not have time to stop this
time! 190 miles to home.
Just in case she flew extremely fast
northwards I checked her nest at 5pm, when her mate was eating
a fish and an intruder female was sitting in a tree near the
nest. But no sign of Logie. We returned at 8pm and stayed
until dusk, still the intruder female was near the nest and
landed on it on one occasion. Logie's mate flew off to roost
on a dead tree some distance away at 8.50pm, and the intruder
roosted near the nest tree. Logie will have to oust this
female as soon as she arrives home.

Intruder female at Logie's
nest
Long distance digi-pic
using Nikon Coolpix and Swarowski scope
|
19th April |
Logie spent the day up
until at least 5pm in the same area - it was thick cloud, with
drizzle and a north-east wind and this prevented her moving on
north.

Logie's movements on 18th
and 19th April |
20th April |
Logie spent another day SW
of Dumfries - mainly perched in woodlands, which she used on
her southward migration. In the early morning she was fishing
at Lochaber Loch near Lochanhead. The weather was better
than yesterday but still overcast with a fresh NE wind. Larry
Griffin of the Wildfowl and Wetlands Trust told me that
two ospreys arrived on the other side of the estuary, one at
Caerlaverock WWT reserve and the other feeding on a dead tree
out on the mudflats. He wondered if the one out on the
mudflats might have been Logie, but her signals all came from
the west side of the estuary. Fascinating that
Caerlaverock and the Nith Estuary is home to another species,
Barnacle Geese, which is also being tracked by 'World on the
Move' and the WWT.
Up in Moray, it was a sunny day but
with a cold easterly wind; the male and the ringed female were
at the nesting site, although the intruder female was mainly
perched on a high tree rather than the nest. Attempted matings
were taking place but they are still not acting like a settled
pair. Not far away is another nest which at present only has a
single male, so when Logie gets home, the intruder female
could move there, or may oust Logie if she doesn't arrive
soon. Logie could then move there to find a new mate.
|
21st April |
Still near Dumfries -
perched around Lochaber Loch midday to 4pm, otherwise in woods
nearby - wind still fresh to strong NE. |
22ndApril |
Logie was still at her
roost near Dumfries at 5am - last signal of that transmission.
Today the weather is improving, Scandinavian high pressure
giving a better day, clearer after early morning fog, and,
importantly, winds becoming SE rather than NE or E. Today
looks like giving Logie a better chance to fly on north - with
following or light winds she could just about make the whole
flight to her nest in a day, but we'll see. Today is the 42nd
day of her mammoth migration - much delayed by running into
bad weather, like other ospreys which have arrived over the
last couple of days or are still to arrive. So much is down to
chance, if she had started a few days earlier from her island
in West Africa she could have missed the weather delays.
She had not arrived by 9pm and I will have to wait for
overnight signals to see if she moved north part of the
way.
Actually data came in this morning to
show that Logie had left after midday as the weather improved
at last and the wind turned to south-east. At 1pm she was NW
of Dumfries, heading for Fourmerkland Tower, flying north at
68km/h. An hour later she was 38 kilometres further on near
Leadhills flying N at 85km/h at 1211 metres altitude, and at
3pm she was just east of Airdrie flying NNW at 55km/h. At 4pm
she was flying north at 30km/h just west of Airdrie and an
hour later was circling and gaining height just west of
Comrie, in Perthshire. At 6pm to 8pm she was perched by the
river Tay, two kilometres downstream from Loch Tay. An hour
later she was roosting 5 kilometres away just 400 metres NW of
Castle Menzies, near Aberfeldy. She had covered 186
kilometres. |
23rd April |
Logie was still at her
overnight roost at 5am but an hour later was circling over the
Pass of Killiecrankie in Perthshire, which is 14 kilometres
from her roost. At 7am she was over the central Cairngorms,
flying downwind N at 100km/h over Beinn Chaorainn just SE of
Cairngorm, at an altitude of 1484 metres. At 8am she was
flying at 85km/h downwind across the Moray moors heading for
her nest.
Once the signals came in early this
morning, we rushed to Logie's nest and found four ospreys
circling and skirmishing over the site - she had arrived just
as we did. After checking the birds with my binoculars, I
suddenly saw the distinctive short radio aerial and identified
Logie positively - here she was back home after her epic
journey - to the exact tree she left on 4th August last
year.

Logie's flight 22nd
-23rd April
There then followed a period of
continual skirmishing - Logie, the 'new' female and the male
tried landing on the nest - and sometimes talons flashed
between the two females. Logie looked fit (although her
plumage was quite faded from the glare of the African sun) -
just as well, because there was no way the male was going to
feed her in this excitement. Sometimes even a third female
joined in at aerial circling - often all three birds would
drift away high in the sky and then return. Logie did show
real ownership several times when she landed in the nest,
crouching down with spread wings and trying to frighten off
the intruder female, but once or twice even her mate
dive-bombed her and sent her packing. Other than the fighting
ospreys, it was a lovely calm morning and three sand martins
flew by - a sign of spring at last. We watched the excitement
until 10 am and then had to leave. I will be back during the
day and it may take several days to sort out the hierarchy at
the nest - will Logie regain her nest and mate, or will she
have to find new ones? More news late this evening and
tomorrow. On the way home, we called in at Logie primary
school, who have been following her travels and from where
Logie gets her name, to tell the children of her safe
return.
This evening Logie was perched on the
nest, the male on a perch in the next door tree - otherwise
all quiet as the sun went down at 9pm - will check nest site
to see if Logie is in control of her old nest and do a
complete update in the morning.
Later the signals came in and showed
that Logie was in continuous flight all morning until at least
midday - usually within 600 metres of her nest. Finally at 1pm
the signals showed she was perched on her nest, and this was
also the situation at 2pm, 3pm and 4pm, so she had won back
her nest. But what an extra effort after flying back all that
way; it shows the advantages for adults to be back early. Now
she needs to build up condition to lay eggs, and at 9pm she
looked well fed (her crop was full), so her mate must have
caught an evening fish. |
23rd April |
Photographs taken at
Logie's nest site on 23rd April
top left - first view of
Logie at 08.10am top right - first
landing on eyrie
middle left - two females
aerial chasing
middle right - male displaying
bottom left - Logie
attacking other female at
nest bottom right -
Logie on nest mid afternoon |
24th April |
At 8.25am, Logie was
standing firmly in her nest, scanning the skies for her mate.
His job is to catch fish and bring them to the nest; her task
is to protect the nest and, once she has laid eggs in a week
or so, to carry out the bulk of incubation, while the male
catches fish. It will take another day or two to be certain
all is normal. The intruder female has been seen off but she
has spent a week hoping to claim this nest and mate, and now
she has to go off and find a new place - a metal ring (and no
colour ring) suggests to me she is an older osprey who may
have lost a mate, or who may have been waiting for her mate to
return. Hopefully the latter, as yesterday saw more ospreys
arriving in Scotland in what is a very late spring arrival. If
I find her nesting, I will include that news in this log.
Now that Logie is home, I will update
this page occasionally with key happenings - when she lays
eggs, when her eggs hatch, how many young there are, etc etc -
and then in mid August, assuming everything goes as planned in
osprey lives, we will follow her migration back to Africa on a
daily basis - she will probably leave later than last year
because of her delay, but will she stop over in the
Solway? Will she follow the same route back as she did
last year? What pitfalls will she encounter on the way back,
and will she winter on the same island? We may even try
to follow her by land and air on that journey
back!! but either way, we'll definitely follow her
progress here.
Her migration from West Africa lasted
43 days and she flew at least 3619 miles (5803 kilometres) in
27 days of active migration; she also spent 16 days waiting
out the bad weather. Her best day's flight was 215 miles, and
her shortest just 26 miles.
We have been amazed by the incredible
interest in Logie and her migration via this Highland
Foundation for Wildlife website, the BBC World on the Move
programme and the media in general. We have really
enjoyed reading the incoming emails and been very moved by
some of the stories you have submitted - we've also been
grateful to those people who have sent in sightings,
information and sometimes photographs all the way from the
Straits of Gibraltar to Scotland. Thanks so much for the
emails - we have tried to answer them all and still have some
to catch up on.
Logie's story has been so interesting,
and incorporates so many aspects of ospreys' lives and
migrations to and from West Africa, that following her return
to Africa next autumn, we are planning to publish a book on
Logie. It will also include comments, stories and information
sent in from observers and followers of Logie. If anyone has
any special comments or feelings about her and her migration,
please email me. We would love to share your
thoughts on this bird.
Finally, a very big thanks is due to
Talisman Energy Ltd in Aberdeen for their funding of the GPS
transmitters (and the good news is that we will have new
transmitters on several more Moray ospreys this autumn); also
to Logie Primary School, to the local landowners who have
helped with the project and to the BBC Natural History Unit in
Bristol for including Logie in the World on the Move series,
which continues right into next autumn's migration. And a big
thanks for the GoogleEarth programme which allows us to
illustrate bird migration in such a graphic manner,
Donations to this project.
Thanks very much to those who have sent in donations to help
our osprey tracking project - if you have enjoyed Logie's
migration and would like to help fund this project and further
studies, we would be very grateful for any donations to help
with the costs of transmissions from the satellite tracking
stations, associated osprey fieldwork and maintaining the
website. We are also looking for additional larger
funders for satellite radio equipment. To all those who
asked, we're sorry that we don't have facilities for credit or
debt card donations, but see our donations webpage for how you
can help. Donations |
24th April |
Several people have asked
if there are hides or facilities to view Logie at her nest -
I'm sorry, but there are none. The great bulk of the ospreys
in Scotland breed quietly at nests on private land, farms and
crofts, or in private or national forests, where local people
keep an eye on their protection and maintain the
confidentiality of the nests to prevent nest robberies or
disturbance. This allows the ospreys to breed
successfully in peace. There are now an exciting range of
visitor centres for watching ospreys and viewing close up
video of their nests, including the long famous Loch Garten
site in Strathspey, Rothiemurchus fishery near Aviemore, the
SWT reserve at Loch of the Lowes, Dunkeld, sites in England at
Rutland Water and Bassenthwaite Lake, also near Portmadog in
North Wales, and sites at Forestry Commission forests near
Peebles, Aberfoyle and Huntly. So there are plenty of
locations to view ospreys and learn about their lives, and
even more places where ospreys can be watched fishing. And if
you happen to find a nest, click on Reporting Osprey Nest
Sites
NEW OSPREY BOOK DUE
OUT EARLY JUNE. Roy Dennis has written a new book on
Ospreys - called 'A Life of Ospreys' which is
being published by Whittles Publishing, Caithness. It's a
comprehensive study of the lives of ospreys and osprey
watchers, of their history (recent and ancient), their
ecology, migrations, reintroductions and wintering of ospreys
in the British Isles and abroad, with many photographs,
illustrations, maps, line drawings and scientific data. Full
details will appear as publication approaches - it will be
available countrywide but specially signed individual copies
will be available for purchase from Roy Dennis - email roydennis at aol.com if you would like notice of when they will be
available and would like to order an inscribed
copy. |
29th April |
Logie has been within 400
metres of her nest ever since she pushed out the other female;
all seems settled, there has been more nest building and today
at 8.30 am Logie was standing in the nest, and at
10.45am, she was eating a trout on a perch near the nest; the
male was standing in the nest with a full crop (he would have
eaten the front half of the fish). Later, she flew to nest
with tail end which the male took to a branch to eat, and
Logie perched beside him. She needs to feed up in order to
produce her clutch of eggs. |
Logie's flight details
during her spring migration
Her autumn flight was
5667 kilometres (3542 miles).
The shortest distance
between her nest and Ilha Roxa is 5198 kms (3229 miles)
Date |
Day's
flying |
Distance
kilometres |
Total
Distance (Kms) |
Place |
Distance
miles |
Total Distance
(miles) |
12th
March |
1 |
221 |
221 |
Senegal |
138 |
138 |
13th
March |
2 |
218 |
439 |
Senegal |
136 |
274 |
14th
March |
3 |
313 |
753 |
Mauritania |
196 |
470 |
15th
March |
4 |
339 |
1091 |
Mauritania |
212 |
682 |
16th
March |
5 |
258 |
1349 |
Mauritania |
161 |
843 |
17th
March |
6 |
304 |
1653 |
Mauritania |
190 |
1033 |
18th
March |
7 |
344 |
1997 |
Algeria |
215 |
1248 |
19th
March |
8 |
308 |
2305 |
Morocco |
193 |
1441 |
20th
March |
9 |
243 |
2548 |
Morocco |
152 |
1593 |
21st
March |
10 |
282 |
2830 |
Morocco |
176 |
1769 |
22nd
March |
11 |
281 |
3111 |
Spain |
176 |
1945 |
23rd
March |
12 |
224 |
3335 |
Spain |
140 |
2085 |
24th March |
13 |
239 |
3574 |
Spain |
148 |
2233 |
25th
March |
14 |
188 |
3762 |
Spain |
117 |
2350 |
26th March |
15 |
113 |
3875 |
Spain |
71 |
2421 |
stop
-over |
16-26 |
local
flights |
|
Spain |
|
|
7th
April |
27 |
201 |
4076 |
France |
125 |
2546 |
8th
April |
28 |
170 |
4246 |
France |
106 |
2652 |
9th
April |
29 |
42 |
4288 |
France |
26 |
2678 |
10th
April |
30 |
0 |
4288 |
France |
0 |
2678 |
11th
April |
31 |
211 |
4499 |
France |
132 |
2810 |
12th
April |
32 |
376 |
4875 |
England |
230 |
3040 |
13th
April |
33 |
55 |
4930 |
England |
34 |
3074 |
14th
April |
34 |
with
15th |
- |
England |
- |
- |
15th
April |
35 |
188 |
5118 |
England |
118 |
3191 |
16th
April |
36 |
local |
- |
England |
- |
- |
17th
April |
37 |
280 |
5398 |
England |
175 |
3366 |
18th
April |
38 |
95 |
5493 |
Scotland |
59 |
3425 |
19th-21st |
39-41 |
stop-over |
|
Scotland |
|
|
22nd
April |
42 |
186 |
5679 |
Scotland |
116 |
3541 |
23rd
April |
43 |
124 |
5803 |
HOME |
78 |
3619 |
Return to BBC website
www.bbc.co.uk/radio4/worldonthemove/
AUTUMN
MIGRATION
From 13th July
to her departure on migration on 4th August; her hourly positions
recorded by the GPS radio were all within 50 metres of the nest
except on two occasions - once 2.5 kms and once 1.2 kms away; rhe
female's task is to remain near the nest to protect and feed the
young. The male catches all the fish.
4th August was a
beautiful sunny day in a very wet overcast summer, and by mid
morning she started migration. She was still at the nest at 9am but
gone by 1pm.
|
|
web.jpg) |
Adult female, having been trapped for
ringing. |
 |
Logie's Autumn Migration |
BIRD Adult
Female |
DATE |
NOTES |
4th August |
at 1pm, flying at 46 kms/hour through the Lecht into
Aberdeenshire |
4th August |
5pm: flying SSW at 29 kms/hour past Alyth,
Angus |
4th August |
9pm: roosting in a wood near Kinfauns, Perth. Day's
journey 136 kms |
5th August |
5am: still at roost; 9am perched by a loop in the
river Earn, possibly eating a fish or fishing. |
5th August |
1pm: just west of Cowdenbeath. |
5th August |
4pm: onwards - roosted in a wood N of Cobbinshaw Loch,
to the SW of Edinburgh. Day's journey 65 kms |
6th August |
5am: at roost; 9am: 13 kms to SE flying at 53
kms/hour, just north of Dunsyre |
6th August |
1pm: flying SW along Tweed Valley, near
Glenbreck |
6th August |
5pm: in middle of Nith estuary, south of Dumfries,
presumably fishing |
6th August |
9pm: perched on post in estuary near Caerlaverock
shore: day's journey 99 kms |
7th August |
5am: roosted overnight in Shambellie wood near New
Abbey |
4th-6th August
migration |
 |
7th -22nd August |
The female has made an extended stop-over on the Nith
Estuary and surrounds; roosting in a favourite woodland site and
fishing regularly across the Nith estuary and the Solway Firth, as
well as at Loch Kinder. She has also used day time roosts in
Kirkconnel Flow NNR nearer Dumfries |
15th August
her movements from dawn to dusk
|
 |
27th Aug |
She is still stopping-over in the same area on the
Solway
On 22nd August, Edmund Fellowes
went and checked out her favourite localities and sent these photos.
Top left Kirkconnell Flow NNR; top right Loch Kinder with favourite
perch tree; and two views of the Nith Estuary and the Solway
Firth. Thanks Edmund. |
|
|
2nd Sep |
She is still on 'stop over' on the Nith
estuary - although moving more widely to forests NW of New Abbey and
fishing along the Caerlaverock merse. This is now a 27 day feeding
rest on migration, which seems quite long, but females have plenty
of time because they leave the nest site early. This allows the
young to get all the fish brought in by the male. I saw both chicks
on the eyrie yesterday - one eating a big trout - the other waiting
for its meal. |
6th Sep |
She's still there - but spending more time
along the shores of the Caerlaverock Wildfowl & Wetlands Trust
reserve. Yesterday morning, Larry Griffin, WWT scientist at
Caerlaverock, checked her positions and found her eating a fish on a
washed up dead tree on the mudflats. Attached is a photo from his
mobile phone! Both young still at the nesting site yesterday -
one perched in an oak tree watching the antics of a red
squirrel.

Interesting that she is there,
because Larry and the WWT are using similar satellite transmitters
to track barnacle geese and they are just starting their journey
back from Spitzbergen to winter at Caerlaverock, while the osprey
will head to Africa. See www.wwt.org.uk/barnacle
|
7th - 9th |
Still living in same area |
10th Sept
ENGLAND
WALES
FRANCE |
At 6am she was still at a new roost on farmland south
of Kirkconnell but an hour later she was 33 kilometres away on the
Cumbria coast near Flimby. This was the start of a 756 kilometre
flight to the north coast of France! Hourly fixes showed us
her journey in detail.
From the coast of the Lakes she
flew down the Irish Sea - being 10 kms SW of Blackpool at 9am and
over the South Wirral at 10am. She was travelling at a speed of 50
to 60 kph, probably taking advantage of clear skies and following
wind, mostly 150 to 270 metres altitude. Flying south through
Shropshire, she was just west of Monmouth in South Wales at 1pm. An
hour later she was over a 1000 metres above the centre of the
Bristol Channel heading for Clevedon.
She continued to migrate south or
SSE over Glastonbury and Dorchester, so by 5 pm she was 39 kms SSE
of Portland Bill in Dorset, out over the sea flying south at 51kph
and 460 metres above the sea. An hour later she was just north of
the Channel Islands, still travelling south at 50 to 65kph.
She had reached landfall on the
north Brittany coast in FRANCE by 8pm. |
11th Sept
FRANCE
SPAIN |
From 5am to 6am she was 11 kms south of last night's
position, probably at her overnight roost. and then moved another 9
kilometre south and probably feeding. By 10am she was back on her
migration heading south at 41kph. She crossed the Britanny peninsula
and set out to sea heading SSW past Noirmoutier.
Her flight across the Bay of
Biscay was direct and purposeful, although probably with a
wind in her face. Mainly travelling SSW at between 58 and 72 kph she
was covering just over 50 kilometres per hour over the sea at
altitudes from 100 to 300 metres above sea level. At 8pm when fixes
ceased she was just 40 kilometres from the Spanish coast in eastern
Astorias. She had covered 628 kilometres to reach SPAIN.
Migration track over
Bay of Biscay (from GoogleEarth)

|
12th Sept |
The first GPS fix at 0400GMT was 1.2 kilometres from
the coast near Villahormes. |
12th Sept |
Migration to date
from north Scotland to north Spain

|
12th Sept |
At 0500GMT she was still at the overnight roost, then
from 0600 to 0800 GMT she was perched in mountains 1.8 kms to the
SSW. By 0900GMT she had restarted her migration, flying at 26kph at
1107 metres along mountain ridges. An hour later she was 23 kms
further east skirting the highest mountains of Picos de Europa,
before turning SE and then south over mainland Spain. Migrating
slowly south at 34 to 60 kph, at altitudes of 970 to 1950 metres
above sea level, she passed a large reservoir (Aguilar de campoo) at
1300GMT and passed to the east of Vallodid in the late afternoon.
She was on the edge of woodlands at 1800GMT, nearly 50 kilometres to
the SSE of Vallodid, after completing 275 kilometres. An hour later
she moved to roost further into the woods not far from the Castillo
de Coca in Castillo y Leon province. |
13th Sept |
She stayed at her roosting site until 0700 GMT, then
moved back to her first position of last evening, where she stayed
on the edge of the woods until 0900 GMT. An hour later she was
flying SSW at 55kph, and by 1100GMT she was moving SSW to reach the
Sierra de Gredos mountains to the west of Madrid at midday. At
1200GMT, she high above Avila with its great medieval castle walls,
crossing the mountains at heights of nearly 2000 metres she
continued flying SSW and the last of this batch of GPS fixes was
high over the river Tietar. |
13th Sep |
At 1500GMT she was migrating south at 62kph at
Talavera de la Reina, continuing over the mountains, she changed
heading at 1700GMT to pass round a large mountain and then drop down
into the large reservoir of Embalse del Cijara. She roosted on a
wooded headland in the reservoir. Her day's journey was 213
kilometres. |
14th Sep |
Still at roost until 0600GMT, from 0700 to 0900GMT she
had moved one kilometre towards the point of the headland and was
resting there - possibly having fished. At 1000GMT she was 10 kms SW
on the edge of a smaller reservoir near Castilblanco. By 1100 she
was flying south again at 45kph. |
14th Sep |
She flew steadily all day across Badajoz - mainly at
23 to 40kph, passing Monterrubio de la Serena at 1400GMT and by
1700GMT was west of Lora del Rio in Seville province. |
14th Sep |
By 1800GMT she had reached her roost site in riverine
trees beside a large river in farmland 30 kms 4 kms west of Tocina
to the north of Seville. Her day's flight was 208 kilometres - a
leisurely day. |
15th Sep |
At roost beside Guadalquivir river until 0600GMT, then
moved 150 metres down river until 0800GMT - query eating fish.
Aerial view of roost site.  |
15th Sep |
At 0900GMT was migrating SSW at 60kph and an hour
later was just north of Dos Hermanes, SE of Seville. Carried on
leisurely south, passing Lebrija before 1200GMT and passing west of
Jerez at 1300GMT. Headed SSE to perch in old salt pans near Santa
Maria and then moved 9 kms SSE to perch on old salt pans between
road and river east of Puerta Real at 1600GMT. An hour later she was
perched on edge of small wood 7 kms east and at 1800GMT had reached
her overnight roost site in trees south of a small lake near Laguna
del Comisario, where she stayed until 1900GMT, but at 2000GMT she
was 400 metres further into the edge of the lake.
|
16th Sep |
Still at roost until 0600GMT, then moved 140 metres
north. By 1000GMT she was back in the marshes on east side of the
Bay of Cadiz, a good place to fish but also with dangers for ospreys
because of monafilament nylon nets which are used to protect fish
ponds. At 1100GMT she was 7 kms away, migrating SSE at
41kph; an hour later she was a further 19 kms flying east of Conil
at an altitude of 519 metres. |
16th Sep |
At 1300GMT, she was high over the Atlantic coast just
south of Barbate and an hour later she was 38kilometres due south
flying over the sea at 70kph just 2 kilometres from the Moroccan
coast, 5kms west of Tangier. Interestingly, she started the flight
at 672metres altitude but by the time she reached the African coast
she was only 42 metres above the sea. Low flights over the sea at
the Straits of Gibraltar can be hazardous to large raptors because
of harassment by yellow-legged gulls, which can occasionally force
them into the water. |
16th Sep
MOROCCO |
At 1500GMT she was flying south over the hills of
Morocco at 58kph and an hour later she was still flying fast to the
SSW near Laamarine but only covering 25 kms on thr ground, so she
was either flying into strong winds or spending time soaring over
the peaks. |
16th Sep |
She reached her overnight roosting area at 1800GMT in
low wooded hills south of Chkaifien. The roost site was in a
scattered trees on the hill top and the degree of detail on
GoogleEarth was incredible, even showing individual trees. See
below:
 |
17th Sep |
She stayed near the roost trees until 0900GMT, then
headed on south passing over agricultural lands, gradually rising
from flying at 237 metres to 594 metres altitude to the east of
Keniha. At 1400GMT she was flying at 40kph some 24kms east of Rabat
on the Atlantic coast. The travelled distance over the ground again
suggested she was soaring as well as carrying out direct flights.
Over the next three hours she travelled hourly distances of 45, 40
and 40 kms, and by the last signal of the day at 1700GMT she was at
1095 metres over the mountains near Dovar el Tssouf, heading for
Marrakesh. She had flown 265 kilometres since 0900GMT.
|
17th Sep |
Her flight over the
Straits from Spain into Morocco

|
17th Sep |
At 1800GMT she was perched in woods on north side of a
mountain south of Oulad Attou; an hour later she was roosting 140
metres away in the wooded slopes. |
18th Sep |
At roost until 0800GMT; two hours later she was flying
over a big lake - Barrage El Massira, 21 kms to the
south. |
18th Sep |
At 1100 she had started a strong migration,
flying SSW at 55kph. Over the next two hours she headed south,
passing just 7 kilometres east of Marrakech at 1300GMT, the she
headed into the High Atlas mountains. At 1400GMT she was flying SW
at 69kph at 1373 metres above sea level near Amizmiz, and an hour
later was cresting the summits at a height of 1994 metres and
passing the hill top village of Assif El Meht. At 1600GMT she
was flying down through a big valley at 815 metres altitude,
travelling at 38kph to the WSW. |
|
 |
18th Sep |
She continued her flight until 1800GMT when she choose
a roosting site among scattered bushes and tree in semi-desert 3 kms
ESE of Tamloukt. Her day's flight was 268 kilometres, including a
major mountain crossing. But she must have passed this way many
times before - I wonder if she uses the same fishing and roosting
places on each annual migration. |
19th Sep |
Still at her roost on latest transmission for the day
at 0500GMT and stayed there until 0700; an hour later she was 4km
south, flying SSW at 55kph over irrigated farms. At 0900GMT she was
on same direction over Taroudant, and an hour later perched 15 km
south. |
19th Sep |
At 1100GMT she was flying up into another range of
mountains and at 1300GMT had changed direction and was flying at
39kph to SSE and heading for water. At 1500GMT she was perched at
the water's edge of a large lake Youssaf Dam
|
19th Sep |
At 1500GMT she commenced a S to SSW migration over
mountains and deserts, at 1700GMT she was flying at 62kph at an
altitude of 1732 metres in the mountains. Two hours later she had
cleared the mountains and dropped down into valleys where she
roosted the night in stony deserts about 30 kilometres SE of
Guelmin. Her day's journey was 228 kilometres. |
19th Sep |
Roost site in desert

|
20th Sep |
0500GMT still at roost - migration journey
to this date

|
20th Sep |
Stayed at the roosting area until 0900GMT. At
1000GMT she was 22 kilometres south, flying at 27kph and presumably
soaring over a mountain ridge as her heading was NNW. |
20th Sep |
At 1100GMT, she was heading south up into the mountain
plateaux, and it looked as she was cutting the corner to fly the
direct inland route over the Sahara Desert to West Africa. An hour
later she was flying at 69kph in a SSW direction. The weather was
clear with 15 to 20km/h northerly winds. At 1300GMT she was
continuing the fast migration as she was 44 kilometres further
south, flying at 64kph at 1800 metres above sea level over the
western Hammada. |
20th Sep
Western Sahara |
At 1400GMT she was over Western Sahara heading south
and an hour later she was 56 kilometres south migrating at 81 kph
over very remote and inhospitable deserts; and a further hour later
she was 50 kilometres further south near Tfariti. I wonder if she is
travelling by herself or with another osprey; generally ospreys are
loners and do not migrate in flocks like honey buzzards or black
kites. |
20th Sep |
At 1700GMT she had passed into northern Mauritania
between Bir Mogrein and Ain Ben Til, outposts on trans Saharan
trails. An hour later she had stopped to roost in a large expnase of
stony desert, with rock outcrops, boulder and occasional bushes. She
is now 3585 kilometres from her nest site in Moray - shortest
distance.
The weather forecast is clear
skies, hot sun, temperatures up to 44C and NE winds of 17-22kph, at
least she will have a tail wind south. |
21st Sep |
During the night she moved her roosting site by one
kilometre, presumably she was disturbed by an animal or a bird, and
with a bright half moon in open desert it was easy to change
position. |
21st Sep |
At 1000GMT she was 45 kilometres to the SSW, flying
over the desert at 75kph, with presumably a strong tail wind! She
continued on this SSW course through the northern Mauritanian
deserts through the rest of the morning and the whole afternoon in
baking heat and cloudless skies. |
21st Sep |
Between 1500 and 1600GMT, she veered her track to
avoid passing over one of the largest iron mines in the world at
Zouerat, and Fderik, where the whole mountain is iron ore. The
freight trains carrying the ore to the Atlantic coast are 3
kilometres long. The encroaching sand dunes of the Sahara on bottom
right of picture.

|
21st Sep |
At 1700GMT she was migrating over the desert at 68kph,
heading SSW. In the 8 hour flight between 0900GMT and 1700GMT, she
had travelled 494 kilometres, at an average speed of 62
kilometres/hour. Clearly there was a strong tail wind but this is
impressive flying and helps get her out the inhospitable deserts,
where there is no chance to catch fish, as quickly as possible. It's
at these times she needs the fat she put on at excellent stop-over
feeding places such as the Dumfriesshire coast. |
21st Sep |
at 1800GMT she was just south of Choum, still fast at
72kph, but 7 kms further SW she stopped at her roosting before
1900GMT. she roosted overnight in open desert west of a large dry
river bed. Her day's journey was 572 kms. |
22nd Sep |
At nightime roost at 0600GMT but an hour later she had
moved 3 kms SW where she stayed until at least 0900GMT. At 1000GMT
she was 23 kms on her flight, travelling at 40kph SSW. Her
migration continued in this direction and at 1200GMT she was 39kms
west of Atar, flying at 66kph to the south. The Adrar mountain
plateaux is a remote region of gorges and shifting sands, with a
very small human population.
Stuart Benn, who travelled in the
Atar region of Mauritania a few years ago, has sent me the following
two photos showing the type of country the osprey was flying over
today.


|
22nd Sep |
At 1500GMT she was now flying at an altitude of 1977
metres above sea level over the high plateau, at a speed of 37kph;
the tail winds of yesterday were clearly less. She continued at this
altitude for the next 3 hours in a generally SSW direction at speeds
of 33 to 40kph. |
22nd Sep |
She stopped to roost in sandy desert, a few kilometres
from a rocky ridge, 28 kms further on and much lower altitude,
before 1900GMT. Her flight today was 323 kilometres over
extremely rugged desert terrain, but she is now less than 300
kilometres to the Senegal river and hopefully her first fish for 3
days.
The map shows her flight over the
Mauritanian mountains - to the top right is the incredible circular
outline of the Richat geological structure.
|
23rd Sep |
She stayed at the roost site in the desert at the
southern foot of the Adrar highlands until 0900GMT, then set off on
a new track SSE, and an hour later at 100GMT was 14kms away flying
at 37kph. Over the next three hours she covered hourly flights of
15, 17 and 25 kilometres in a SSE then S direction. |
23rd Sep |
At 1400GMT she was a futher 30 kms south, flying south
at 54kph, and an hour later had reached sparsely vegetated deserts.
She continued the southerly track to reach her roost site before
1700GMT |
23rd Sep |
After a day's flight of 161 kilometres, she was
perched 4 kilometres north of the shores of Lac d'Aleg, an important
inland wetland. Being so close to the water it is possible that she
went and fished at the lake between the hourly signals. A change of
direction from last night's roost suggests she knew the location of
this lake.
Interestingly, the young marsh
harrier from Scotland visited this lake on 3rd October 2004, and a
male osprey from Strathspey was located, using the old style
satellite transmitter, near this lake on its northward migration on
19th March 2001.
Below is the description of this
wetland included in the Marsh Harrier pages; I do not have any more
recent data although the wetland is thought to be the northern most
wintering site of Aquatic Warblers from Europe. Does anyone have a
photograph of Lac d'Aeg? |
|
Description of Lac d'Aleg from Birdlife
International website
BirdLife
IBA Factsheet for MR013 Lac d'Aleg, Mauritania (Edited
down version).
Area:
4275 ha; Altitude 30m. Lac d' Aleg is situated 5 km to
the north-west of the town of Aleg in the south-west of
the country. The lake is a closed depression in an old
course of the Senegal river fed by rainwater run-off
from Oued Katchi, which drains a catchment of 3,420 sq
km. The Katchi is a seasonal watercourse which was
formerly a tributary of the Senegal river, but now cut
off from it by dunes. The lake is endorheic and
semi-permanent and typically varies in depth from 1 to 2
m at the end of the dry season to a maximum of 3 to 4 m
at the end of the rains. At its maximum size, usually
attained in October, it is 22 km long and 4 km wide. The
area of the lake varies considerably from year to year
depending on rainfall. The vegetetation of the lake
forms concentric rings. The banks are characterized by
woody species and grasses. The southern edge of the lake
is bounded by the Nouakchott to Aleg road. There are
various conservation problems.
More than
116,000 waterbirds were recorded here in September 1987.
Peak counts are Glossy Ibis (Plegadis falcinellus) 2380;
Fulvous Whistling-duck (Dendrocygna bicolor) 9000;
Spur-winged Goose (Plectropterus gambensis) 5000;
Northern Pintail (Anas acuta) 33000; Garganey (Anas
querquedula) 50350; Purple Swamphen (Porphyrio
porphyrio) 760; Black-winged Stilt (Himantopus
himantopus) 1613 and Caspian Tern (Sterna caspia) 2000.
| |
|
24th Sep |
She appeared to fish in Lake d'Aleg being close to the
north and south shores, but by 1000GMT she had restarted migration
to the south, flying at 28kph. An hour later she was 14 kilometres
SE, flying at 62kph. |
24th Sep
SENEGAL |
The next fix was three hours later when she was 84
kilometres SSW, having flown from Mauritania into SENEGAL. During
this flight she had passed over the River Senegal and its extensive
riverine marshes. This is an area rich in fishing opportunities, but
she was obviously heading for her own wintering quarters.

|
24th Sep |
She continued SSW and by 1800GMT was roosting in open
dry scrub about 85 kilometres south of the Senegal river.
|
25th Sep |
She remained at her roost until 0900GMT; an hour later
she flying SSW at 48kph. By 1200GMT she was climbing altitude and
was flying fast at 60kph, probably into an easterly wind, as her
track was south. |
25th Sep |
By 1400GMT she was turning more to the SSW, flying at
51kph at 969 metres above sea level. At 1500GMT she was 26
kilometres further south and two hours later she had reached
her overnight roosting area in an area of woods, fields and cleared
areas. The roost was in a cleared area near a small wood.; south of
east of Wore. |
26th Sep |
During the night, she had moved 3.3 kms south;
presumably she was disturbed during the night but with a full moon
it would have been easier for her to choose a new perch
tree. |
26th Sep |
By 1000GMT she was migrating SW near Boulel, and an
hour ler just north of Kaffrine. She continued south and then after
midday she turned south west towards the Gambia river. At 1400GMT,
she reached a tributary of the river and followed it SW.
|
26th Sep
GAMBIA |
At 1600GMT, she reached River Gambia, and stayed near
big marshes on the north side of the river near Tendaba. This is
about 100 kilometres up river from Banjul, the capital of The
Gambia. Her latest track is shown below.

|
27th Sep
Senegal |
The River Gambia was clearly not her chosen
destination because she set off south after apparently fishing over
the marshes between 0900 and 1000GMT. At 1100GMT she was near
Kwinella about 11kms south. She continued south and flew into
southern Senegal, being over the large river in Casamanche at
1500GMT. |
27th Sep |
By 1600GMT, she had passed into Guinea-Bissau over the
river Cachea, and an hour later was flying south at 57kph, just
north of the capital Bissau. She then headed out over the broad
estuary of the River Gaba and at 1900GMT was perched over shallow
water. She then flew a kilometres north to roost on the island of
Bolama. |
27th Sep
Guinea-Bissau |
The complex series of islands, shallow seas, mangroves
swamps and marshes, as well as the south Atlantic Ocean, on the
coast of Guinea-Bissau might be her wintering site - it is a
favourite wintering area for European ospreys. |
|
Since her migration started she has flown 5667
kilometres south; her daily flights have ranged between 65 and 756
kilometres. The longest being her first flight, after her extended
stop-over on the Solway, from southern Scotland to France. Her
average daily distance flown over this 18 day migration was 298
kilometres; her average flying time was 8 to 9 hours at a speed of
33 to 37 kilometres per hour. The shortest direct distance
between her wintering site and her nest in Scotland is 5198
kilometres (3229 miles)

|
28th Sep |
She stayed at her roost until 1000GMT, but her journey
was not finished. At 1100GMT, she was 27 kilometres SSW over the
shallow seas flying at 65kph towards the Ilha Roxa. In the afternoon
she had settled at the south end of the island, near the coast. On
two occasions she was perched out in the shallow sea, and she
roosted that evening in scattered trees. |
28th Sep |
The island of Roxa is one of the outer islands of the
Bijagos archipelaga; it is about 20 kilometres long by 10 kilometres
at its widest. It is part of a UNESCO Biosphere reserave (see
below).
A description of the reserve is
given below. In 1999, in the first year of our studies of osprey
migration using the old style satelitte transmitters, a breeding
female from a nest near Glenferness wintered just 18 kilometres west
on the island of Bubaque. |
29th Sep |
The early fixes this morning came from her roosting
site. |
|
Description of the
UNESCO Biosphere reserve
Boloma
Bijagós Biosphere Reserve is an archipelago of 88 islands located on
the coast of Guinea-Bissau in western Africa. It was formed from the
ancient delta of the Rio Geba and the Rio Grande. There is a high
diversity of ecosystems: mangroves with intertidal zones, palm
forests, dry and semi-dry forests, secondary and degraded forests,
coastal savanna, sand banks and aquatic zones. Many rivers discharge
nutrient rich freshwater into the sea with resulting in very high
productivity. The archipelago, therefore provides an important
feeding and reproduction ground for many species. Fish, crustaceans
and molluscs are especially abundant. Among the mammal species are
the Nile crocodile (Crocodylus niloticus) and the hippopotamus
(Hippopotamus amphibius).
In
1996, the Biosphere Reserve had about 27,000 inhabitants living
mostly in the cities of Bubaque and Bolama. Because of the colonial
history, there is a large ethnic diversity. Depending on their
culture, people make their living from rice cultivation stock
raising, wild palm tree exploitation, fishing and the collection of
molluscs, orchards and horticulture. Several research and education
programmes are taking place.
|
1st Oct |
It looks as though she is back at her winter quarters,
she has settled down to a routine, fishing in the sea within a half
a kilometre of the shore, and ranging within 2.6 kilometres of her
main roosts on the wooded island. We will follow her movements
during the autumn and bring regular updates, and try to find out
more about her wintering home. |
2nd-5th Oct |
She is now well settled - it is about 600 metres
between her main roost and her main fishing site; and her range is
only 1.4 by 1.5 kilometres. I wonder how many years she has wintered
at this spot in the tropical seas. |
12th Oct |
Her movements are now very settled, between resting on
favourite trees and hunting once or twice a day in the coastal
waters. The following map shows the complete migration from
nesting grounds in Moray to her winter quarters.

|
20th Oct |
There has been very little movement, most of the time
she sits in the same roost tree, and when hungry flies about 400 to
600 metres to the sea to catch fish. The night time roost is about
350 metres further inland in the island woodland. Today, she
travelled the furthest distance record since arrival; 3.5 kilometres
to the NE, flying SE at 48kph just 26 metres above the sea at
midday. Presumably making a longer trip to catch fish or flying with
wintering local ospreys. |
11th Nov - 10th Dec |
She is still at exactly the same location. The fishing
locations are mainly 500 metres from the main roost tree, with one
as far out to sea as 800 metres from the roost. She has a favourite
morning roost on the shoreline , possibly a fallen tree in water,
400 metres to the north, and the only other movement was 300 metres
south. Her wintering home range is all within one square kilometre.
She has a very settled winter home range. |
22nd Dec |
Still in exactly same location, nearly all of her time
spent perched in the same large tree a few hundred metres from the
ocean, while day time signals are often from a position about 150
metres offshore, where there is probably a good perch such as a
beached tree trunk. |
3rd Jan |
Most of the time, she is still roosting in the same
tree on Roxa Island. Between Christmas and today she has been within
one kilometre of her roost, except on 2nd January when she was 2.7
kilometres NNE at 9am. She had probably gone there to fish in more
sheltered water, as the winds are light to fresh NE. Today it's
cloudy skies with good visibility in the islands, temperature of 16C
and 42% humidity. |
19th Jan - 8th March |
Logie is still spending most of her time at her main
roost. Twice she has roosted overnight some distance away; 700
metres NW (13/14th Jan) and 430 metres NW (18th/19th Jan). Favourite
fishing sites about 400 metres offshore, although on 17th January
she was 1.06 kms ENE flying east at 32 kph at an altitude of 21
metres - an obvious fish hunting flight.
| |