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The site was identified as important in 2000 because it was regularly supporting significant populations of the species listed below, meeting ('triggering') IBA criteria.

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

Species	Red List1	Season	Year(s)	Size	IBA criteria
Common Eider Somateria mollissima	NT	winter	1989	32,900 individuals	A4i, B1i, C3
Common Scoter Melanitta nigra	LC	winter	1989	48,920 individuals	A4i, B1i, C3
Velvet Scoter Melanitta fusca	VU	winter	1989	7,450 individuals	A4i, B1i, C3
A4iii Species group - waterbirds	n/a	unknown	1989	50,000-99,999 individuals	A4iii, C4

1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2000) may differ.

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 trigger species' populations)
Species	Reference	Actual	Units	% remaining	Result
Great Cormorant Phalacrocorax carbo	1,000	800	individuals	80	near favourable
Pied Avocet Recurvirostra avosetta	8	8	breeding pairs	100	favourable
Pied Avocet Recurvirostra avosetta	1,032	700	individuals	68	unfavourable
Black-headed Gull Larus ridibundus	4,600	4,600	individuals	100	favourable
Sandwich Tern Thalasseus sandvicensis	685	685	breeding pairs	100	favourable
Western Marsh-harrier Circus aeruginosus	1	1	breeding pairs	100	favourable

Response (conservation actions taken for the trigger species and/or their habitats)
Protected areas	Management plan	Other action	Result
Not assessed	Not assessed	Not assessed	not assessed

Year	Protected Area	Designation	% overlap with IBA
1947	Eskebjerg Vesterlyng	Fredet ved afgørelse, exl. Kirkeomgivelser	1
1967	Sejerø Bugt Korevlen	Fredet ved afgørelse, exl. Kirkeomgivelser	<1
1967	Sejerø Bugt	Fredet ved afgørelse, exl. Kirkeomgivelser	<1
1977	Sejro Bugt, Nekselo Bugt & Saltbæk Vig	Ramsar Site, Wetland of International Importance	100
1978	Overby Lyng	Fredet ved afgørelse, exl. Kirkeomgivelser	<1
1983	Sejerø Bugt og Nekselø	Special Protection Area (Birds Directive)	100
1985	Nekselø	Fredet ved afgørelse, exl. Kirkeomgivelser	1
1985	Sejerø Bugt	Fredet ved afgørelse, exl. Kirkeomgivelser	<1
1992	Saltbæk Vig	Fredet ved afgørelse, exl. Kirkeomgivelser	<1
1992	Odsherred Kommune	§3 beskyttet natur (alle søer, moser, vandløb, heder, enge mv)	<1
1992	Kalundborg Kommune	§3 beskyttet natur (alle søer, moser, vandløb, heder, enge mv)	<1
1994	Sejerø Bay and Nekselø	Baltic Sea Protected Area (Helcom)	99
1998	Sejerø Bugt og Saltbæk Vig	Site of Community Importance (Habitats Directive)	100
2009	The bay of Sejerø and Saltbæk Vig	Baltic Sea Protected Area (HELCOM)	100
2009	Bjergene, Vejrhøjbuen 1	Fredet ved afgørelse, exl. Kirkeomgivelser	<1

Habitat1	Habitat detail	% of IBA
Marine Neritic		95
Marine Coastal/Supratidal		minor (<10)
Marine Intertidal		minor (<10)

1. IUCN Habitat classification.

Land use	% of IBA
tourism/recreation	60
agriculture	50
nature conservation and research	50

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Sejerø Bay and Nekselø (Denmark). Downloaded from https://datazone.birdlife.org/site/factsheet/sejerø-bay-and-nekselø-iba-denmark on 23/11/2024.