Field signs. The head, neck and tail and white belly, back dark, aspidno-sizaya; secondary mahovye and shoulder feathers dark gray with white tops; beak is very solid. Young birds pale sage-brown with pestrinami. behind the dark marble figure, which persists for more adult birds. Wing 400-450 mm (Ivanov, Shtegman, 1978). Distribution. Okhotsk north coast, the coast of Kamchatka, Sakhalin and the Kuril Islands on Shantarskie (Ivanov, Shtegman, 1978). References. |