The Skelligs: Great Skellig and Little Skellig

IBA Criteria

Year of most recent IBA criteria assessment: 2009

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 2000 8,135-13,454 breeding pairs B1ii, B3, C2, C6
Manx Shearwater Puffinus puffinus LC breeding 2001 561-1,077 breeding pairs B2
Northern Gannet Morus bassanus LC breeding 1999 28,799 breeding pairs A4ii, B1ii, B3, C3
A4iii Species group - seabirds n/a breeding 1999-2001 20,000-49,999 A4iii, C4

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

IBA Protection

Protected Area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)
Skelligs SPA Special Protection Area (Birds Directive) 624 protected area contains site 245
Little Skellig Nature Reserve 8 protected area contained by site 8
Great Skellig Nature Reserve 23 protected area contained by site 23


IUCN Habitat Habitat detail Extent (% of site)
Sea Sea inlets and coastal features -
Coastline Sea cliffs and rocky shores, Rock stacks and islets -
For further information about the habitat classification please click here.

Land use

Land-use Extent (% of site)
not utilised -
tourism/recreation -
For further information about the land use classification please click here.

Recommended citation
BirdLife International (2022) Important Bird Areas factsheet: The Skelligs: Great Skellig and Little Skellig. Downloaded from on 18/05/2022.