Riesenseeadler
There are many endangered birds on these islands, including the Blakiston's fish owl, osprey, black stork, red-necked grebe, gyrfalcon, solitary snipe, Steller's sea eagle and the Siberian grouse. In the spring and summer, a number of seabird species nest on the islands, including black-headed and slaty-backed gull, common and thick-billed murre, horned and tufted puffin, spectacled guillemot, Aleutian tern, long-billed murrelet, and pelagic cormorant.