Buldir Island Colony


IBA Justification

The site was identified as internationally important for bird conservation in 2012 because it was regularly supporting significant populations of the species listed below, meeting ('triggering') IBA criteria.

Populations meeting IBA criteria ('trigger species') at the site:
Species Red List Season (year/s of estimate) Size IBA criteria
Fork-tailed Storm-petrel Hydrobates furcatus LC breeding (1974–2009) 1,300,000 birds A4ii
Leach's Storm-petrel Hydrobates leucorhous VU breeding (1974–2009) 1,700,000 birds A4ii
Red-legged Kittiwake Rissa brevirostris VU breeding (1974–2009) 12,680 birds A4i
Black-legged Kittiwake Rissa tridactyla VU breeding (1974–2009) 29,600 birds A4i
Horned Puffin Fratercula corniculata LC breeding (1974–2009) 20,000 birds A4ii
Parakeet Auklet Aethia psittacula LC breeding (1974–2009) 12,000 birds A4ii
Whiskered Auklet Aethia pygmaea LC breeding (1974–2009) 3,000 birds A4ii
Crested Auklet Aethia cristatella LC breeding (1974–2009) 280,000 birds A4ii
Ancient Murrelet Synthliboramphus antiquus LC breeding (1974–2009) 10,000 birds A4ii

IBA Protection

Year Protected Area Designation (management category) % coverage of IBA
1980 Alaska Maritime National Wildlife Refuge (IV) 6
1980 Aleutian Islands Wilderness (Ib) 6


Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Buldir Island Colony (USA). Downloaded from https://datazone.birdlife.org/site/factsheet/buldir-island-colony-iba-usa on 22/12/2024.