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 50,000 breeding pairs A4ii, B1ii, B2
Northern Fulmar Fulmarus glacialis LC breeding 1989 50,000 breeding pairs A4ii, B1ii
Manx Shearwater Puffinus puffinus LC breeding 1989 5,000 breeding pairs A4ii, B1ii, B2
European Shag Gulosus aristotelis LC breeding 1989 150 breeding pairs B3
Great Skua Catharacta skua LC breeding 1989 15 breeding pairs B3
Atlantic Puffin Fratercula arctica VU breeding 1989 70,000 breeding pairs A4ii, B1ii
Black Guillemot Cepphus grylle LC breeding 1989 400 breeding pairs A4ii, B1ii, B2
A4iii Species group - seabirds n/a breeding 1989 170,000-180,000 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 -
Marine Coastal/Supratidal -
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 (2023) Important Bird Areas factsheet: Sandoy. Downloaded from on 31/03/2023.