Data Zone
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 IBA criteria.
Populations meeting IBA criteria ('key 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 individuals | A4ii |
| Leach's Storm-petrel Hydrobates leucorhous | VU | breeding (1974–2009) | 1,700,000 individuals | A4ii |
| Red-legged Kittiwake Rissa brevirostris | VU | breeding (1974–2009) | 12,680 individuals | A4i |
| Black-legged Kittiwake Rissa tridactyla | VU | breeding (1974–2009) | 29,600 individuals | A4i |
| Horned Puffin Fratercula corniculata | LC | breeding (1974–2009) | 20,000 individuals | A4ii |
| Parakeet Auklet Aethia psittacula | LC | breeding (1974–2009) | 12,000 individuals | A4ii |
| Whiskered Auklet Aethia pygmaea | LC | breeding (1974–2009) | 3,000 individuals | A4ii |
| Crested Auklet Aethia cristatella | LC | breeding (1974–2009) | 280,000 individuals | A4ii |
| Ancient Murrelet Synthliboramphus antiquus | LC | breeding (1974–2009) | 10,000 individuals | A4ii |
| 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 (2025) Important Bird Area factsheet: Buldir Island Colony (USA). Downloaded from
https://datazone.birdlife.org/site/factsheet/buldir-island-colony-iba-usa on 25/01/2025.