The site was identified as internationally important for bird conservation in 2002 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 |
Tundra Swan Cygnus columbianus |
LC |
passage (1990–1999) |
2,587 birds |
A4i, B1i, C2 |
Brent Goose Branta bernicla |
LC |
winter (1990–1999) |
24,255 birds |
A4i, B1i, C3 |
Barnacle Goose Branta leucopsis |
LC |
winter (1990–1999) |
72,281 birds |
A4i, B1i, B2, C2, C6 |
Greylag Goose Anser anser |
LC |
winter (1990–1999) |
15,700 birds |
A4i, B1i, C3 |
Greater White-fronted Goose Anser albifrons |
LC |
winter (1990–1999) |
9,314 birds |
B1i, C3 |
Common Eider Somateria mollissima |
NT |
winter (1990–1999) |
73,873 birds |
A4i, B1i, C3 |
Common Shelduck Tadorna tadorna |
LC |
winter (1990–1999) |
41,907 birds |
A4i, B1i, C3 |
Eurasian Wigeon Mareca penelope |
LC |
winter (1990–1999) |
24,512 birds |
A4i, B1i, C3 |
Mallard Anas platyrhynchos |
LC |
winter (1990–1999) |
34,626 birds |
C3 |
Northern Pintail Anas acuta |
LC |
winter (1990–1999) |
5,500 birds |
B1i, C3 |
Common Teal Anas crecca |
LC |
winter (1990–1999) |
7,595 birds |
B1i, C3 |
Eurasian Spoonbill Platalea leucorodia |
LC |
breeding (1990–1999) |
15 pairs |
C6 |
Eurasian Spoonbill Platalea leucorodia |
LC |
winter (1990–1999) |
85 birds |
B1i, C6 |
Great Cormorant Phalacrocorax carbo |
LC |
winter (1990–1999) |
1,734 birds |
B1i, C3 |
Eurasian Oystercatcher Haematopus ostralegus |
NT |
winter (1990–1999) |
144,597 birds |
A4i, B1i, C3 |
Eurasian Oystercatcher Haematopus ostralegus |
NT |
breeding (1990–1999) |
13,170 pairs |
C3 |
Pied Avocet Recurvirostra avosetta |
LC |
breeding (1990–1999) |
2,605 pairs |
A4i, B3, C2, C6 |
Pied Avocet Recurvirostra avosetta |
LC |
winter (1990–1999) |
20,077 birds |
A4i, B1i, B2, C2, C6 |
Grey Plover Pluvialis squatarola |
VU |
winter (1990–1999) |
40,335 birds |
A4i, B1i, C3 |
Eurasian Golden Plover Pluvialis apricaria |
LC |
winter (1990–1999) |
30,000 birds |
A4i, B1i, C2, C6 |
Common Ringed Plover Charadrius hiaticula |
LC |
winter (1990–1999) |
3,300 birds |
A4i, B1i, C3 |
Kentish Plover Charadrius alexandrinus |
LC |
breeding (1990–1999) |
93 pairs |
B2 |
Eurasian Curlew Numenius arquata |
NT |
winter (1990–1999) |
66,217 birds |
A4i, B1i, B2, C3 |
Bar-tailed Godwit Limosa lapponica |
NT |
winter (1990–1999) |
36,818 birds |
A4i, B1i, B2, C2 |
Black-tailed Godwit Limosa limosa |
NT |
breeding (1990–1999) |
1,082 pairs |
B2 |
Ruddy Turnstone Arenaria interpres |
NT |
winter (1990–1999) |
1,493 birds |
A4i, B1i, C3 |
Red Knot Calidris canutus |
NT |
winter (1990–1999) |
38,184 birds |
A4i, B1i, B2, C3 |
Ruff Calidris pugnax |
LC |
breeding (1990–1999) |
50 pairs |
C6 |
Ruff Calidris pugnax |
LC |
winter (1990–1999) |
1,500 birds |
C6 |
Dunlin Calidris alpina |
NT |
winter (1990–1999) |
159,771 birds |
A4i, B1i, B2, C3 |
Spotted Redshank Tringa erythropus |
LC |
winter (1990–1999) |
6,000 birds |
A4i, B1i, C3 |
Common Greenshank Tringa nebularia |
LC |
winter (1990–1999) |
2,226 birds |
A4i, B1i, C3 |
Common Redshank Tringa totanus |
LC |
breeding (1990–1999) |
4,981 pairs |
B2, C3 |
Common Redshank Tringa totanus |
LC |
winter (1990–1999) |
17,000 birds |
A4i, B1i, C3 |
Mediterranean Gull Larus melanocephalus |
LC |
breeding (1990–1999) |
5 pairs |
C6 |
Mew Gull Larus canus |
LC |
breeding (1990–1999) |
5,123 pairs |
B2 |
Mew Gull Larus canus |
LC |
winter (1990–1999) |
24,406 birds |
A4i, B1i, C3 |
Lesser Black-backed Gull Larus fuscus |
LC |
breeding (1990–1999) |
17,278 pairs |
B3, C3 |
Great Black-backed Gull Larus marinus |
LC |
winter (1980–1989) |
5,232 birds |
A4i, B1i, C3 |
Arctic Herring Gull Larus smithsonianus |
LC |
breeding (1990–1999) |
37,458 pairs |
C3 |
Little Tern Sternula albifrons |
LC |
breeding (1990–1999) |
329 pairs |
B2, C6 |
Little Tern Sternula albifrons |
LC |
winter (1990–1999) |
2,100 birds |
A4i, B1i, C2, C6 |
Common Tern Sterna hirundo |
LC |
breeding (1990–1999) |
6,298 pairs |
C2, C6 |
Arctic Tern Sterna paradisaea |
LC |
breeding (1990–1999) |
2,048 pairs |
C2, C6 |
Common Gull-billed Tern Gelochelidon nilotica |
LC |
breeding (1990–1999) |
49 pairs |
C6 |
Sandwich Tern Thalasseus sandvicensis |
LC |
breeding (1990–1999) |
3,155 pairs |
B2, C2, C6 |
Short-eared Owl Asio flammeus |
LC |
breeding (1990–1999) |
74 pairs |
C6 |
Western Marsh-harrier Circus aeruginosus |
LC |
breeding (1990–1999) |
88 pairs |
C6 |
Montagu's Harrier Circus pygargus |
LC |
breeding (1990–1999) |
5 pairs |
C6 |
Hen Harrier Circus cyaneus |
LC |
breeding (1990–1999) |
55 pairs |
C6 |
Peregrine Falcon Falco peregrinus |
LC |
breeding (1990–1999) |
6 pairs |
C6 |
A4iii Species group - waterbirds |
n/a |
breeding (1990–1999) |
93,739 pairs |
A4iii, C4 |
A4iii Species group - waterbirds |
n/a |
winter (1990–1999) |
910,638 birds |
A4iii, C4 |