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Location Denmark, Vejle Amtskommune
Central coordinates 10o 10.00' East  55o 51.00' North
IBA criteria A4i, A4iii, B1i, B2, C2, C3, C4
Area 42,880 ha
Altitude 0 - 15m
Year of IBA assessment 2000

Dansk Ornitologisk Forening

Site description An extensive shallow sea area with three large islands (Alvrø, Hjarnø and Endelave), supporting coastal saltmarshes, lagoons, cultivated land and scattered habitation. Several smaller uninhabited islets as well as intertidal areas are included within the IBA.

Key Biodiversity The site holds a large breeding colony of Phalacrocorax carbo and high numbers of wintering Aythya marila and Somateria mollissima. Breeding data are incomplete since numbers were not available for Alrø, Søby Rev and Svanegrunden islands. Several species listed on Annex I of the EC Birds Directive breed at the site, including Circus aeruginosus, Recurvirostra avosetta, Sterna sandvicensis, S. paradisaea and S. albifrons.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Greater Scaup Aythya marila winter  1993  2,469 individuals  B1i, B2, C3  Least Concern 
Common Eider Somateria mollissima winter  1993  22,150 individuals  A4i, B1i, C3  Near Threatened 
Great Cormorant Phalacrocorax carbo breeding  1996  4,320 breeding pairs  good  A4i, B1i, C3  Least Concern 
Bar-tailed Godwit Limosa lapponica passage  1993  1,600 individuals  A4i, B1i, C2  Near Threatened 
A4iii Species group - waterbirds unknown  1993  20,000-49,999 individuals  unknown  A4iii, C4   

IBA Monitoring

2010 not assessed very unfavourable not assessed
Good - based on reliable and complete / representative data

Melanitta fusca 3000 15 individuals 1 very unfavourable
Phalacrocorax carbo Great Cormorant 6480 1037 breeding pairs 17 very unfavourable
Phalacrocorax carbo Great Cormorant 12250 3890 individuals 32 very unfavourable
Circus aeruginosus Western Marsh-harrier 2 1 breeding pairs 50 unfavourable
Pluvialis apricaria Eurasian Golden Plover 12300 12300 individuals 100 favourable

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Gersdorffslund Protected by Conservation Order 77 protected area contained by site 77  
Horsens Fjord and Endelave Wetlands of International Importance (Ramsar) 42,580 protected area contained by site 42,580  
Horsens Fjord, Svanegrunden & Endelave Baltic Sea Protected Area (Helcom) 45,932 protected area overlaps with site 42,566  
Horsens Fjord, Svanegrunden & Endelave Major Conservation Area 42,500 protected area contained by site 42,500  
Horskær Gyllingnæs Protected by Conservation Order 18 protected area contained by site 18  
Ovre Endelave Protected by Conservation Order 168 protected area contained by site 168  
Sondrup-Åkjær Protected by Conservation Order 1,520 protected area is adjacent to site 0  
Sovind Sondrup Protected by Conservation Order 600 protected area is adjacent to site 0  


IUCN habitat Habitat detail Extent (% of site)
Sea Sea inlets and coastal features  90%
Artificial - terrestrial Arable land  5%

Land use

Land-use Extent (% of site)
agriculture 5%
unknown 95%

Protection status National Low International High42,880 ha of IBA covered by Ramsar Site (Horsens Fjord and Endelave, 43,200 ha). 42,880 ha of IBA covered by Special Protection Area (Horsens Fjord and Endelave, 42,880 ha).

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Horsens Fjord, Svanegrunden & Endelave. Downloaded from on 22/10/2016

To provide new information to update this factsheet or to correct any errors, please email BirdLife