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Location Denmark, Fyns Amtskommune,Sønderjyllands Amtskommune
Central coordinates 9o 43.00' East  55o 21.00' North
IBA criteria A4iii, B1i, C3, C4, C6
Area 35,060 ha
Altitude 0 - 10m
Year of IBA assessment 2000

Dansk Ornitologisk Forening

Site description A narrow strait including islands and peninsulas with coves, lagoons, saltmarshes, reedbeds, broadleaved forests, cultivated land and some scattered habitation.

Key Biodiversity Up to seven waterbird species are present in significant numbers during cold winters, totalling over 20,000 individuals. Several species listed on Annex I of the EC Birds Directive breed at the site, including Recurvirostra avosetta, Sterna paradisaea and S. albifrons.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Common Eider Somateria mollissima winter  1994  24,200 individuals  B1i, C3  Near Threatened 
White-tailed Sea-eagle Haliaeetus albicilla resident  1996  1 breeding pairs  good  C6  Least Concern 
A4iii Species group - waterbirds winter  1994  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

Aythya fuligula Tufted Duck 3030 2300 individuals 76 near favourable
Aythya marila Greater Scaup 40000 5200 individuals 13 very unfavourable
Circus aeruginosus Western Marsh-harrier 3 2 breeding pairs 67 unfavourable
Thalasseus sandvicensis Sandwich Tern 280 280 individuals 100 favourable

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Lillebælt Game Reserve 49 protected area contained by site 409  
Lillebælt Wetlands of International Importance (Ramsar) 35,058 protected area contains site 35,058  


IUCN habitat Habitat detail Extent (% of site)
Wetlands (inland)   5%
Sea Sea inlets and coastal features  80%
Artificial - terrestrial Arable land  10%

Land use

Land-use Extent (% of site)
agriculture 10%
unknown 90%

Protection status National None International High35,060 ha of IBA covered by Ramsar Site (Lillebælt, 37,330 ha). 35,060 ha of IBA covered by Special Protection Area (Lillebælt, 35,060 ha).

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Lillebælt. Downloaded from on 22/10/2016

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