Data Zone
The site was identified as important 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 List1 | Season | Year(s) | Size | IBA criteria |
|---|---|---|---|---|---|
| Leach's Storm-petrel Hydrobates leucorhous | VU | breeding | 1981 | 80,852 individuals | A4ii |
| Tufted Puffin Fratercula cirrhata | LC | breeding | 1981 | 31,929 individuals | A4ii |
1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2012) may differ.
| Year | Protected Area | Designation | % overlap with IBA |
|---|---|---|---|
| 1980 | Alaska Maritime | National Wildlife Refuge | 19 |
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Umnak Pass Colonies (USA). Downloaded from
https://datazone.birdlife.org/site/factsheet/umnak-pass-colonies-iba-usa on 22/11/2024.