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 |
Whooper Swan Cygnus cygnus |
LC |
passage (1997) |
2,000 birds |
A4i |
Bean Goose Anser fabalis |
LC |
passage (1997) |
7,000 birds |
A4i |
Long-tailed Duck Clangula hyemalis |
VU |
passage (1975–1990) |
10,000–25,200 birds |
A1, A4i |
Steller's Eider Polysticta stelleri |
VU |
passage (1975–1990) |
min 1,000 birds |
A1 |
Siberian Scoter Melanitta stejnegeri |
LC |
passage (1975–1990) |
50,000–153,700 birds |
A4i |
Red-breasted Merganser Mergus serrator |
LC |
passage (1975–1990) |
2,300–6,700 birds |
A4i |
Greater Scaup Aythya marila |
LC |
passage (1975–1990) |
22,000–74,600 birds |
A4i |
Red-throated Loon Gavia stellata |
LC |
passage (1990) |
min 22,000 birds |
A4i |
Yellow-billed Loon Gavia adamsii |
NT |
passage (1990) |
min 500 birds |
A1, A4i |
Eurasian Oystercatcher Haematopus ostralegus |
NT |
passage (1997) |
500 birds |
A1, A4i |
Whimbrel Numenius phaeopus |
LC |
passage (1997) |
50,000 birds |
A4i |
Bar-tailed Godwit Limosa lapponica |
NT |
passage (1997) |
5,000 birds |
A4i |
Black-tailed Godwit Limosa limosa |
NT |
passage (1997) |
10,000 birds |
A4i |
Great Knot Calidris tenuirostris |
EN |
passage (1997) |
40,000 birds |
A4i |
Red Knot Calidris canutus |
NT |
passage (1997) |
3,000 birds |
A4i |
Red-necked Stint Calidris ruficollis |
NT |
passage (1997) |
100,000 birds |
A4i |
Dunlin Calidris alpina |
NT |
passage (1997) |
150,000 birds |
A4i |
Spotted Greenshank Tringa guttifer |
EN |
breeding (1997) |
present |
A1 |
Mew Gull Larus canus |
LC |
passage (1990) |
min 32,300 birds |
A4i |
Slaty-backed Gull Larus schistisagus |
LC |
passage (1990) |
min 23,300 birds |
A4i |
Steller's Sea-eagle Haliaeetus pelagicus |
VU |
resident (1997) |
present |
A1 |
A4iii Species group - waterbirds |
n/a |
passage (1997) |
min 410,000 birds |
A4iii |