The surveys of large birds of prey at Kamchatka have begun
from a beginning of 60th years.
About 350 SSE, WSE and osprey nests were taken into
account , totally about 8300 meetings
with raptors were noticed during the period from 1960 to 1990.
Valley of Kamchatka river
(special surveys were conducted
here during 3 years 1985-1987) and the east coast from Lopatka cape
up to Ust-Kamchatsk were the most detail investigated.
The most successefull surveys
(due to the good choice of the time of the year, technique
and selected areas)
were ones, supported by WWF in 1996.
196 new nests of SSE were found
and the area of more than 12 000 square km which have been
not covered
with the surveys of all previous years was inspected.
What about winter SSE allocation, the special International
survey was made
by Dr. Lobkov and his Japanese colleagues at 1985 both at
Kamchatka, Sachalin, Magadan and Japan. At Kamchatka totally
about 900 birds were
surveyed. Since this survey nobody undertake something
similar during 14 years.
|
Fig2. The map of summer air surveys have done at Kamchatka during
1984-1998 |