Autumn
count on migrating birds of prey at South Baikal migratory pass 51.44N, 103.43E
Observers: Marina Alexeyenko (Krasnoshtanova) (Pribaikal'ski National Park), Viktoria Malysheva, Igor Fefelov (Irkutsk State University)
Observation site: Kultuk (Irkutsk Region, south-east margin of Lake Baikal)
Terms: 23 August - 10 October 2003
|
Species |
Total No. |
% |
|
Pandion haliaetus |
4 |
0.03 |
|
Pernis ptilorhyncus |
1,214 |
9.9 |
|
Buteo buteo |
6,952 |
56.5 |
|
Buteo lagopus |
2 |
0.02 |
|
Buteo hemilasius |
15 |
0.04 |
|
Milvus migrans |
2,029 |
16.5 |
|
Accipiter gentilis |
606 |
4.9 |
|
Accipiter nisus |
1,036 |
8.4 |
|
Accipiter gularis sibiricus |
>5 |
0.04 |
|
Circus (aeruginosus) spilonotus |
2 |
0.02 |
|
Circus cyaneus |
24 |
0.19 |
|
Aquila heliaca |
38 |
0.31 |
|
Aquila chrysaetos |
30 |
0.24 |
|
Aquila clanga |
30 |
0.24 |
|
Aquila nipalensis |
14 |
0.10 |
|
Hieraaetus pennatus |
52 |
0.42 |
|
Haliaetus albicilla |
5 |
0.04 |
|
Falco peregrinus |
4 |
0.03 |
|
Falco tinnunculus |
30 |
0.24 |
|
Falco subbuteo |
25 |
0.20 |
|
Falco cherrug |
1 |
0.01 |
|
Unid. eagle |
2 |
0.02 |
|
Unid. falcon |
5 |
0.04 |
|
Unid. raptor |
75 |
0.6 |
|
Unid. harrier |
1 |
0.01 |
|
Buteo buteo or Pernis ptilorhyncus |
109 |
0.89 |
|
Total: |
12,310 |
100 |
Comments:
The weather was somewhat average. However, a strong and short-timed temperature falling, to –10 –15 degrees under zero at night, was between 9 and 13 October (why the observation was finished 10 October), and a warming did came again in middle October; because of this, some part of Aquila chrysaetos, migrating late, could be underestimated. Migration terms for nesting eagle species (A.heliaca, A.chrysaetos) were later than usually in 2000s, but similar to ones having observed usually in late 1980s.
Bird counts in 2003 were supported by Hawk Mountain Sanctuary, USA.