The Umnak Pass Colonies IBA occupies 73 acres of land comprised of: bare rock/sand/clay, grassland/herbaceous, and shrubland. The IBA is located in the Aleutian Islands ecoregion. It is owned and managed as: bureau of land management blm, and has the following primary uses: hunting-other, refuge-wildlife management, and wilderness.

The Umnak Pass Colonies IBA contains 2 seabird colonies. Collectively, these colonies contain 10 seabird species and an estimated 169,895 birds. The meta-colony is an IBA for the following species: Tufted Puffin (31,929) and Leach's storm-petrel (80,852).

Ornithological Summary

The Umnak Pass Colonies IBA contains 2 seabird colonies. Collectively, these colonies contain 10 seabird species and an estimated 169,895 birds. The meta-colony is an IBA for Tufted Puffin (31,929) and Leach's storm-petrel (80,852). The largest colony, Emerald Island, contains 8 seabird species and an estimated 162,593 birds.

Conservation Issues

The Umnak Pass Colonies IBA is threatened by: aquaculture/fisheries, boats, habitat fragmentation, natural events-other, and water pollution.

Ownership

The Umnak Pass Colonies IBA is owned and managed as: bureau of land management blm.

Habitat

The Unimak Pass Colonies IBA is located in the Aleutian Islands ecoregion and contains the following habitat types: bare rock/sand/clay, grassland/herbaceous, and shrubland. The meta-colony occupies a total land area of 73 acres with an average elevation of -18.8 m.

Land Use

The Umnak Pass Colonies IBA is used for: hunting-other, refuge-wildlife management, and wilderness.