Field signs. Temya, mezhlopatochnaya area and shoulder black feathers with rusty pestrinkami; rear back and nadhvoste black with ohristymi kaemkami at plumes; mid-abdomen and chest are white, the rest of the lower part of the body in the dark longitudinal pestrinkah. Wing 118-122 mm (Ivanov, Shtegman, 1978). Distribution. North America from northern Alaska to the south to the north of Mackenzie. In the limits of the Russian Federation registered zalety to Franz Josef Land and Chukotka (Stepanyan, 1990, 2003). References. |
