Korshage, Hundested and surrounding sea area

Country/territory: Denmark

IBA Criteria met: A4i, A4iii, B1i, B1iv, C3, C4, C5 (2000)
For more information about IBA criteria please click here

Area: 4,000 ha

Dansk Ornitologisk Forening
Most recent IBA monitoring assessment
Year of assessment Threat score (pressure) Condition score (state) Action score (response)
2010 not assessed not assessed not assessed
For more information about IBA monitoring please click here

Site description
A sea area connecting Isefjorden with Kattegat, and the mouth of a shallow fjord with beaches, sand-dunes, saltmarsh, heathland, clay cliffs, agriculture and urban areas. Terrestrial habitats cover just 2.5% of the IBA.

Key biodiversity
This site is important for wintering waterbirds (more than 20,000 individuals), especially for Somateria mollissima, and other waterbirds in cold winters when the remainder of the Isefjord is frozen over. This is also a significant bottleneck site for migrating raptors, particularly in spring (12,090 in total in spring 1996). High numbers of passerines, especially finches Fringilla, occur on passage. Species of global conservation concern that do not meet IBA criteria: Haliaeetus albicilla (max. 8, passage). Dryocopus maritus and Lanius collurio, listed on Annex I of the EC Birds Directive, breed at the site.

Raptors MOU - IBA listed under Table 3 of the Memorandum of Understanding on the Conservation of Migratory Birds of Prey in Africa and Eurasia

Recommended citation
BirdLife International (2023) Important Bird Areas factsheet: Korshage, Hundested and surrounding sea area. Downloaded from on 22/03/2023.