The Castle Rock Colonies IBA occupies 57 acres of land comprised of: bare rock/sand/clay and shrubland. The IBA is located in the Alaska Peninsula ecoregion. It is owned and managed as: bureau of land management blm and fws - national wildlife refuge, and has the following primary uses: refuge-wildlife management.

The Castle Rock Colonies IBA contains 2 seabird colonies. Collectively, these colonies contain 18 seabird species and an estimated 286,508 birds. The meta-colony is an IBA for the following species: Parakeet Auklet (14,050), Black-legged Kittiwake (22,300), Ancient Murrelet (30,000), Cassin's auklet (46,000), Horned Puffin (60,050), and Tufted Puffin (80,015).

Ornithological Summary

The Castle Rock Colonies IBA contains 2 seabird colonies. Collectively, these colonies contain 18 seabird species and an estimated 286,508 birds. The meta-colony is an IBA for Parakeet Auklet (14,050), Black-legged Kittiwake (22,300), Ancient Murrelet (30,000), Cassin's auklet (46,000), Horned Puffin (60,050), and Tufted Puffin (80,015). The largest colony, Castle Rock, contains 15 seabird species and an estimated 271,242 birds.

Conservation Issues

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

Ownership

The Castle Rock Colonies IBA is owned and managed as: bureau of land management blm and fws - national wildlife refuge.

Habitat

The Castle Rock Colonies IBA is located in the Alaska Peninsula ecoregion and contains the following habitat types: bare rock/sand/clay and shrubland. The meta-colony occupies a total land area of 57 acres with an average elevation of 0.3 m.

Land Use

The Castle Rock Colonies IBA is used for: refuge-wildlife management.

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