IBA Criteria

Year of most recent IBA criteria assessment: 2000

Populations of IBA trigger species
Species Current IUCN Red List Category Season Year(s) of estimate Population estimate IBA Criteria Triggered
European Storm-petrel Hydrobates pelagicus LC breeding 1989 5,000 breeding pairs A4ii, B1ii, B2
Atlantic Puffin Fratercula arctica VU breeding 1989 20,000 breeding pairs B1ii, B2
Black Guillemot Cepphus grylle LC breeding 1989 50 breeding pairs A4ii, B1ii
A4iii Species group - seabirds n/a breeding 1989 20,000-49,999 breeding pairs A4iii

Note: This table presents the IBA criteria triggered and the species that triggered then at the time of assessment, the current IUCN Red List category may vary from that which was in place at that time.

For more information about the IBA assessment process and criteria please click here


IUCN Habitat Habitat detail Extent (% of site)
Grassland -
Coastline Sea cliffs and rocky shores, Scree and boulders -
For further information about the habitat classification please click here.

Land use

Land-use Extent (% of site)
agriculture -
For further information about the land use classification please click here.

Recommended citation
BirdLife International (2021) Important Bird Areas factsheet: Koltur. Downloaded from on 28/01/2021.