Field signs. Major duck (mass 0,75-1,5 kg). Reminds wild duck in a summer transfer. Male and female painted the same way: back dark brown, light side, bottom of dirty-white with burovatymi spots. On the wings of white spots formed by the ends of tertiary makhovaya, they are visible and in-flight, and floating birds. Beak black with a yellow tops and black marigold. Legs orange, brown eyes (Syroechkovsky, Rogacheva, 1995).  Distribution. In Russia, usually only in the south of the Far East, occasionally nest in southern Siberia to the west to Lake Baikal. In recent decades, is expanding its area, spreading to north-westerly direction. Now sporadichno nest on the northeast coast of Lake Baikal, including the river. Upper Angara (Scriabin, 1973). There are zalety on the river. Angara, and even in the city of Tomsk. How rarely found nesting cleat on the river. Vilyue (Andreev, 1980). In the province, double-marked in srednetaezhnom Enisee a Village. The peace. In 1978, May 4 male was produced from the pack of ordinary mallard on zaberege from the left bank of the river. Yenisei (Rogacheva et al, 1978); in early September 1978 on the river. Varlamovka Small flocks of ducks in 6 was produced young black male mallard. AS Martynov (1983) reports on the production of black mallard on the river. Lower Tunguska, near the border with the Irkutsk region (to interview hunters). In 1986, on the river. Yenisey in the mouth of Kemi two birds belonging to this thinking, said KN Babashkin. A few facts on the production of black mallard lake. Ubsu-Nur and the Delta. TEN-Hem reported GA Sokolov. On the determination of the ducks in the vicinity of the Islands Chelbihin on the river. Angara spring of 1993, reported VE Anuchina (Syroechkovsky et al, 2000).
Habitats. Flat lake with rich aquatic vegetation. Where the wild duck had not, she is not afraid and can hibernate even at reservoirs in the settlements. In Prieniseyskoy Siberia is more common during the spring migration - in the first half of May (Syroechkovsky et al, 2000). Reproduction. Jacks suit off water in thick grass of the dry blades, vystilaya them down. Masonry, apparently consists of 7-10 bluish eggs. Extraction of young black mallard Middle Yenisey suggests there episodic nesting some of these birds (Rogacheva et al, 1978). Meals are not known, but probably it as a simple quack. Is based on aquatic invertebrates, in the winter - shoots and seeds of plants. A male, obtained May 4 on the river. Yenisey near Village. The peace, the stomach was filled with the remains of aquatic plants (Rogacheva et al, 1978). Number. In Southern Siberia is rare everywhere, in the Krasnoyarsk Territory Unit (Syroechkovsky et al, 2000). Limiting factors. Like other ducks, suffers from over-hunting and economic development of water bodies (Syroechkovsky et al, 2000). References. |
