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The site was identified as internationally important for bird conservation in 2000 because it was regularly supporting significant populations of the species listed below, meeting IBA criteria.

Populations meeting IBA criteria ('key species') at the site:

Species	Red List	Season (year/s of estimate)	Size	IBA criteria
Whooper Swan Cygnus cygnus	LC	winter (1994)	885 individuals	A4i, B1i, C2
Tundra Swan Cygnus columbianus	LC	winter (1994)	377 individuals	A4i, B1i, B2, C2
Pink-footed Goose Anser brachyrhynchus	LC	non-breeding (1994)	2,600 individuals	A4i, B1i, C3
Red-breasted Merganser Mergus serrator	LC	non-breeding (1994)	1,560 individuals	B1i, C3
Eurasian Bittern Botaurus stellaris	LC	breeding (1995)	92 breeding pairs	B2, C2, C6
Pied Avocet Recurvirostra avosetta	LC	breeding (1994)	280 breeding pairs	B1i, B3, C2
Eurasian Golden Plover Pluvialis apricaria	LC	passage (1994)	18,000 individuals	A4i, B1i, C2
Black-tailed Godwit Limosa limosa	NT	breeding (1994)	110 breeding pairs	B2
Black Tern Chlidonias niger	LC	breeding (1994)	28–40 breeding pairs	C2, C6
A4iii Species group - waterbirds	n/a	unknown (1994)	20,000-49,999 individuals	A4iii, C4

Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2000. The most recent assessment (2010) is shown below.

State (condition of the key species' populations)
Species	Actual vs Reference (units)	% remaining	Result
Brent Goose Branta bernicla	85 / 85 (individuals)	100	favourable
Common Shelduck Tadorna tadorna	625 / 625 (individuals)	100	favourable
Spotted Crake Porzana porzana	1 / 73 (breeding pairs)	2	very unfavourable
Common Crane Grus grus	143 / 143 (individuals)	100	favourable
Common Crane Grus grus	4 / 4 (breeding pairs)	100	favourable
Eurasian Spoonbill Platalea leucorodia	174 / 174 (individuals)	100	favourable
Eurasian Bittern Botaurus stellaris	96 / 172 (breeding pairs)	56	unfavourable
Pied Avocet Recurvirostra avosetta	71 / 420 (breeding pairs)	17	very unfavourable
Pied Avocet Recurvirostra avosetta	1,366 / 1,366 (individuals)	100	favourable
Pied Avocet Recurvirostra avosetta	71 / 420 (breeding pairs)	17	very unfavourable
Eurasian Dotterel Eudromias morinellus	54 / 60 (individuals)	90	near favourable
Black-tailed Godwit Limosa limosa	112 / 197 (breeding pairs)	57	unfavourable
Ruff Calidris pugnax	7 / 100 (breeding pairs)	8	very unfavourable
Dunlin Calidris alpina	48 / 130 (breeding pairs)	37	very unfavourable
Little Gull Hydrocoloeus minutus	2 / 15 (breeding pairs)	14	very unfavourable
Black Tern Chlidonias niger	18 / 100 (breeding pairs)	18	very unfavourable
Common Tern Sterna hirundo	52 / 52 (breeding pairs)	100	favourable
Arctic Tern Sterna paradisaea	84 / 132 (breeding pairs)	64	unfavourable
Western Marsh-harrier Circus aeruginosus	38 / 43 (breeding pairs)	89	near favourable
Circus cyaneus	29 / 29 (individuals)	100	favourable
Falco peregrinus	5 / 5 (individuals)	100	favourable

Response (conservation actions taken for the key species and/or their habitats)
Designation	Planning	Action	Result
Not assessed	Not assessed	Not assessed	not assessed

Habitat	% of IBA	Habitat detail
Grassland	30	Humid grasslands
Marine Coastal/Supratidal	major (>10)
Marine Intertidal	-

Land use	% of IBA
nature conservation and research	100
agriculture	30

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Recommended citation
BirdLife International (2025) Important Bird Area factsheet: Eastern part of Vejlerne (Denmark). Downloaded from https://datazone.birdlife.org/site/factsheet/eastern-part-of-vejlerne-iba-denmark on 21/01/2025.