Species |
Current IUCN Red List Category |
Season |
Year(s) of estimate |
Population estimate |
IBA Criteria Triggered |
Tundra Swan Cygnus columbianus |
LC |
non-breeding |
2011-2015 |
624-1,507 individuals |
B1i, C2, C6 |
Barnacle Goose Branta leucopsis |
LC |
non-breeding |
2011-2015 |
13,624-23,215 individuals |
A4i, B1i, C2 |
Greater White-fronted Goose Anser albifrons |
LC |
non-breeding |
2011-2015 |
31,500-38,446 individuals |
B1i, C3 |
Smew Mergellus albellus |
LC |
non-breeding |
2011-2015 |
446-763 individuals |
B1i, C2, C6 |
Tufted Duck Aythya fuligula |
LC |
non-breeding |
2011-2015 |
12,324-18,218 individuals |
B1i, C3 |
Gadwall Mareca strepera |
LC |
non-breeding |
2011-2015 |
15,655 individuals |
B1i, C3 |
Eurasian Wigeon Mareca penelope |
LC |
non-breeding |
2011-2015 |
26,045-45,519 individuals |
B1i, C3 |
Common Teal Anas crecca |
LC |
non-breeding |
2011-2015 |
7,928-12,054 individuals |
B1i, C3 |
Common Coot Fulica atra |
LC |
winter |
2011-2015 |
11,167-14,709 individuals |
B2 |
Black-crowned Night-heron Nycticorax nycticorax |
LC |
breeding |
2011-2015 |
1 breeding pairs |
C6 |
Great White Egret Ardea alba |
LC |
non-breeding |
2011-2015 |
453-961 individuals |
C6 |
Pied Avocet Recurvirostra avosetta |
LC |
breeding |
2011-2015 |
192-408 breeding pairs |
C6 |
Black-tailed Godwit Limosa limosa |
NT |
non-breeding |
2011-2015 |
2,517-4,196 individuals |
B1i, C3 |
Black-headed Gull Larus ridibundus |
LC |
non-breeding |
2011-2015 |
81,530 individuals |
A4i, B1i, C3 |
Osprey Pandion haliaetus |
LC |
non-breeding |
2011-2015 |
9-13 individuals |
C6 |
White-tailed Sea-eagle Haliaeetus albicilla |
LC |
breeding |
2011-2015 |
1-2 breeding pairs |
C6 |
White-tailed Sea-eagle Haliaeetus albicilla |
LC |
non-breeding |
2011-2015 |
4-6 individuals |
C6 |
Common Kingfisher Alcedo atthis |
LC |
breeding |
2011-2015 |
22-33 breeding pairs |
B2, C6 |
Peregrine Falcon Falco peregrinus |
LC |
breeding |
2011-2015 |
3-4 breeding pairs |
C6 |
Sedge Warbler Acrocephalus schoenobaenus |
LC |
breeding |
2011-2015 |
1,024-1,313 breeding pairs |
B3 |
Savi's Warbler Locustella luscinioides |
LC |
breeding |
2011-2015 |
57 breeding pairs |
B3 |
Bluethroat Cyanecula svecica |
LC |
breeding |
2011-2015 |
995-1,165 breeding pairs |
C6 |
A4iii Species group - waterbirds |
n/a |
non-breeding |
2011-2015 |
113,256-225,739 individuals |
A4iii, C4 |
Note: This table presents the IBA criteria triggered and the species that triggered then at the time of
assessment, the current IUCN Red List category may vary from that which was in place at that time.
For more information about the IBA assessment process and criteria please click here
For more information about IBA monitoring please click
Protected Area |
Designation |
Area (ha) |
Relationship with IBA |
Overlap with IBA (ha) |
Sliedrechtse Biesbosch |
Nature Reserve |
797 |
protected area contained by site |
797 |
Hollands Diep
|
Ramsar Site, Wetland of International Importance |
4,050 |
protected area is adjacent to site |
0 |
Dordtse Biesbosch |
Nature Reserve |
806 |
protected area contained by site |
806 |
De Biesbosch
|
National Park |
7,100 |
protected area contained by site |
7,100 |
De Biesbosch
|
Nationaal Park |
8,980 |
protected area overlaps with site |
0 |
Brabantse Biesbosch
|
Nature Conservation Law |
1,500 |
protected area contained by site |
2,691 |
Biesbosch
|
Ramsar Site, Wetland of International Importance |
1,700 |
protected area overlaps with site |
1,700 |
Biesbosch
|
Natuurbeschermingswet |
9,640 |
is identical to site |
0 |
Biesbosch
|
Special Protection Area (Birds Directive) |
9,478 |
is identical to site |
8,522 |
Biesbosch
|
Site of Community Importance (Habitats Directive) |
9,640 |
is identical to site |
9,050 |
For further information about the habitat classification please click
For further information about the land use classification please click