Field signs. Upper back, wings and tail, black, gray lower back, upper body whitish tail feathers; ventral side and shoulder feathers white; at the pinnacle of a small white «mirror». A female breast skobochki dark, dark gray back. A bird in fresh operenii ventral side with ohristym intact. Young birds on top dirty-white with burovatoy his back and numerous cross skobochkami; bottom of the body white with a few dark staples. Wing 93-102 mm (Ivanov, Shtegman, 1978). Distribution. In the past, irregular nesting noted in the European part of Russia's western border to the east to the area of Kaluga, Orel and Tula regions. There are currently subject to sporadic cases of irregular nesting. Zalety registered in Ryazan oblast (Stepanyan, 1990, 2003). References. |
