Морские колониальные птицы о. Беринга (Командорские острова)

The article presents the results of 2015-2020's colonial seabird surveys on Bering Island and analyzes the changes in their numbers and distribution over the past 30 years. The number of colonies on the island has not changed. There are 13 species nesting on the island and 4 species presumably nesting. Their total number exceeds 238,000 pairs. Most colonies are located in the southern part of the island, which includes five basic species: the Northern Fulmar Fulmarus glacialis, the Blacklegged Kittiwake Rissa tridactyla, the Red-legged Kittiwake Rissa brevirostris, and two guillemot species (Uria aalge and Uria lomvia). The most numerous is the Thick-billed Guillemot. The populations of the Red-legged Kittiwake, the Common Guillemot, and the Horned Puffin Fratercula corniculata have increased. The numbers of both cormorant species (Phalacrocorax pelagicus and Phalacrocorax urile) and of the Black-legged Kittiwake have decreased. For the rest of the species, no significant changes were exposed.