Attu Island Colony


IBA Criteria

Year of most recent IBA criteria assessment: 2012

Populations of IBA trigger species
Species Current IUCN Red List Category Season Year(s) of estimate Population estimate IBA Criteria Triggered
Pelagic Cormorant Urile pelagicus LC breeding 1974-2009 2,165 individuals A4i
Red-faced Cormorant Urile urile LC breeding 1974-2009 1,938 individuals A4i
Glaucous-winged Gull Larus glaucescens LC breeding 1974-2009 7,328 individuals A4i

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

Protection status:

Protected Area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)
Aleutian Islands Wilderness 533,102 protected area overlaps with site 0
Alaska Maritime National Wildlife Refuge 2,637,840 protected area overlaps with site 0


Recommended citation
BirdLife International (2020) Important Bird Areas factsheet: Attu Island Colony. Downloaded from http://www.birdlife.org on 22/09/2020.