Field signs. Prohibitive Dolgovyazaya bird with long red legs and black-and-white plumage. The black cap and the band along the back of the neck from different individuals expressed very different, but females are more white-haired. Often, and males and females (females more often) with a white head. A female black back and wings are dull, buree, male - black, with green otlivom. In autumn of all the birds there is a cap, falls to the eyes and ears. Young departure until the very well differ from adults dirty-brown color of dark parts of feathers, with a light flaky image, the eyes of yellow-brown (adults - crimson-red), pink-gray legs, with uneven blue bloom. The weight 180 -220 G, 35-40 cm in length, wing 20,6-25,5 cm, the magnitude of 67-83 see Tokovanie was weak. There is a semblance of current flight when the bird flies slow, measured repeating svistovoe "Tech , Tech, Tech ...", or "teerk, teerk, teerk ...", like that and in the ordinary flight. When anxiety - frequent" terkayuschie "sounds (Ryabitsev, 2001). Distribution. For the territory of Central Siberia is now a rare type of zaletny. Meetings are registered for the Republic of Khakassia and Tuva. Habitats. Favorite habitat - shallow lake shores - as fresh or salt, with rare grassy vegetation less - shrubs or even completely naked (Ryabitsev, 2001). Reproduction. When nesting ground is as solid as well (more) muddy, and even marshy. In accordance with the arranged itself a nest, which is always near the water. On the dry shore is just a hole almost without lining. At the flat and shallow topkom build a large nest in the form of a log to accurately vylozhennym tray. Live as separate pairs, and colonies of up to several dozen couples, often mixed with tern, gulls and other kulikami. In laying 4 eggs, rarely 3, is from 1 to 6. Coloring eggs - from light-colored to olive-brown, with varying density of brown spots and scroll, mostly small, but frequent. The size of eggs 38-48 x 28-34 mm. Nasizhivayut rotating male and female 25-26 days, then drive along chicks. It nests and vyvodka very troublesome, are greeted with shouts rights persistent sharp, fast download and bustle in the colony, along with its neighbors and strangers species, and the psychological withstand an attack on any of force. Avian predators successfully chase. There are aggressive in their nests to Kulik other species. The young become independent in some months of age (Ryabitsev, 2001). Nutrition. Kormyatsya most often in shallow water, nespeshno rashazhivaya on the "elbow" or the belly in the water, sometimes swim. Catch in water predacious diving beetles, boat-fly, bokoplavov etc. (Ryabitsev, 2001). References. |
