The site was identified as internationally important for bird conservation in 2016 because it was regularly supporting significant populations of the species listed below, meeting ('triggering') IBA criteria.
Species |
Red List |
Season (year/s of estimate) |
Size |
IBA criteria |
Lesser White-fronted Goose Anser erythropus |
VU |
passage (1997) |
rare |
A1 |
Long-tailed Duck Clangula hyemalis |
VU |
passage (1976–1982) |
min 50,000 birds |
A1, A4i |
Long-tailed Duck Clangula hyemalis |
VU |
winter (1968–1970) |
min 10,000 birds |
A1 |
Common Eider Somateria mollissima |
NT |
breeding (1969–1970) |
2,500–3,000 birds |
A4i |
Common Eider Somateria mollissima |
NT |
passage (1976–1982) |
min 15,000 birds |
A1, A4i |
Steller's Eider Polysticta stelleri |
VU |
winter (1969–1970) |
min 5,000 birds |
A4i |
Steller's Eider Polysticta stelleri |
VU |
passage (1976–1982) |
min 20,000 birds |
A1, A4i |
Siberian Scoter Melanitta stejnegeri |
LC |
passage (1976–1982) |
20,000–25,000 birds |
A4i |
Black Scoter Melanitta americana |
NT |
passage (1976–1982) |
20,000–25,000 birds |
A1, A4i |
Goosander Mergus merganser |
LC |
passage (1968–1970) |
3,000–5,000 birds |
A4i |
Red-breasted Merganser Mergus serrator |
LC |
passage (1976–1982) |
min 8,000 birds |
A4i |
Harlequin Duck Histrionicus histrionicus |
LC |
breeding (1966–1978) |
4,000–5,000 birds |
A4i |
Harlequin Duck Histrionicus histrionicus |
LC |
passage (1976–1982) |
10,000–15,000 birds |
A4i |
Greater Scaup Aythya marila |
LC |
passage (1976–1983) |
25,000–30,000 birds |
A4i |
Pelagic Cormorant Urile pelagicus |
LC |
breeding (1994) |
min 5,234 birds |
A4i |
Black-legged Kittiwake Rissa tridactyla |
VU |
breeding (1966–1994) |
35,000–240,000 birds |
A4i |
Slaty-backed Gull Larus schistisagus |
LC |
breeding (1994) |
min 11,320 birds |
A4i |
Slaty-backed Gull Larus schistisagus |
LC |
passage (1976–1982) |
min 40,000 birds |
A4i |
Steller's Sea-eagle Haliaeetus pelagicus |
VU |
breeding (1997) |
rare |
A1 |
A4iii Species group - seabirds |
n/a |
breeding (1997) |
min 200,000 pairs |
A4iii |
A4iii Species group - waterbirds |
n/a |
passage (1997) |
20,000–250,000 birds |
A4iii |