Cape Senyavin, on the north coast of the Alaska Peninsula, is approx. 55 km northeast of Port Moller. This IBA is a short section of cliff (less than 1 km). The terrain inland from the coast is flat or gently rolling tundra and marsh.

Other than this headland, the 600 km long north shore of the Alaska Peninsula consists of sandy beaches and occassional lagoons.

Ornithological Summary

Cape Senyavin has 15,000 seabirds, mosly Black-legged Kittiwakes. This is the only habitat for cliff-nesting seabird in eastern Bristol Bay.

Nearby coastal waters are an important staging area for migratory waterfowl, particularly seaducks, some of which remain in the area year-round.

Dau, C. personal communication.

Mendenhall, V. personal communication.

US Fish & Wildlife Service. 2002. Beringian Seabird Colony Catalog: database and archives. US Fish & Wildlife Service, Migratory Bird Management, Anchorage, AK.

Conservation Issues

Driftnet fisheries for salmon occur close to the colony. Salmon gill nets commonly catch and drown murres, although there are no data yet for this area.

Intensive fishing pressures may be changing the abundance and availability of seabird prey over the long term. Climate change due to global warming may already be changing the distribution and availability of food resources of seabirds, due to effects on marine currents and sea ice.

Frequent small aircraft traffic near the colony disturbs seabirds, while fishing operations nearby may also disturb them at times.

Oil drilling and extraction could take place in the Bering Sea, increasing the risk of contamination from oil pollution.


Riverine thickets
Shrub tundra
Humid and mesic grass/forbs. nearshore marine waters.

Land Use

Guided tours to view walruses that haul out on the beach.

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