Field signs. Duck medium-sized, smaller mallard (mass spring 0,7-0,8 kg). Coloring afar appears uniform, burovatoy. The head and in males, and females burovataya. Wing kashtanovo-brown with a visible white mirror. A male gray beak, a female yellow. The flight easily, but noisy, vertical take-off from the water. Voice male - a deep sonorous Creek, similar to the Creek crow, a female voice - often treskuchee quack, higher and dramatic than that of wild duck (Syroechkovsky, Rogacheva, 1980, 1995).  Distribution. Eurasian species, in the south central Siberia rare, with declining numbers. Here is the north-eastern limit of the range of species. First of gray duck met everywhere in Minusinsk and Usinskoy basins, Achinskoy forest, and came to southern taiga zone (Rogacheva, 1988). Now more or less regularly meets only reedy lake Khakassia and Achinskoy forest (Martynov, 1983). Under the Krasnoyarsk was irregular, nesting is not installed (Shukhov, 1925). For the taiga part of the province there are indications of meetings gray ducks on the river. Murme Taseevskogo area (9 birds in autumn 1978) and Angara have Kezhmy (Martynov, 1983). Remarkable discovery in the early 30's. Isolated nesting gray ducks on the river. Sym (Isakov, 1952). This fact needs to be confirmed. Srednetaezhnom Enisee Meeting at 7 June, 1977 in the Peace, on a temporary snow lakes near the village, 12 Jun, 1977 female gray ducks marked on the right tributary Dubchesa - r. Toches (Rogacheva et al, 1978). In spring 1984, a pair of gray ducks have produced with. Upper Imbatskoe (63 ° 10 'N) (Rogacheva, 1988). Mentioned as a rare species of nesting water Sayano-Shushenskogo Reserve (Sokolov et al, 1983; Petrov, Rudkovsky, 1985). We noted in the gray duck nesting at the White lakes in the Py-Hemskom region of Tuva (Baikal, Laptsenak, 1996; Laptsenak et al, 1996), the tract Trehozerki (Altai district, Khakassia) (Baykalov et al, 1997). In the autumn passage greeted us in the West Sayan in Gagulskoy and Seybinskoy basins (Baikal, Laptsenak, 1996).
Habitats. Lakes or slow flowing rivers, usually with rich aquatic vegetation. In Khakassia occurs mainly on small-Sing
mennym and nadpoymennym lake from the shore, at least in part reedy and sedge (Syroechkovsky, Rogacheva, 1980, 1995). Reproduction. Nests on the ground, often in the steppes far (1-2 km) of water. Jacks or under bushes in thickets of wormwood, etc., Or overlooked - obchno around nests gulls, terns, sandpipers. Nest - fossa, vystlannaya dry grass and down. Masonry - 5-14 (average 8.6) yellowish or olive eggs in vyvodke an average of 6.2 (5-10) utyat (Prokofiev, 1984). Nutrition. Feeds largely leaves to shoot plants, more water. Animal feed its diet occupy a small place (Syroechkovsky, Rogacheva, 1980).  Number. The total number of autumn in the province, to assess AS Martynov (1983) - 2200 specimens (data modeling). Is the concentration of most of the birds of this type suitable for small plots in the steppe (43% of all birds ) And disbursed lesopolevoy waters most of southern taiga zone (48%). According to S. Prokofiev (1984a), gray duck usually on the steppe and forest lakes Khakassia - small and large flood plain, but with preserved coastal vegetation; strength in the waters Iyuso-Shirinskoy steppes - 2,3-10,5 (average 5,8) of individuals at 1 km 2 of suitable land, with August on a share of this type accounted for 3.6% recorded waterfowl.
Previously, gray duck was in the south edge of a significant proportion of mining hunters. Now its value is small. According to S. Prokofiev (1984a), in the autumn harvesting hunters Iyuso-Shirinskoy steppe is 5%. According to our records in the south and the north edge of Tuva its share in the production of 2,3-3% (Baikal, Laptsenak, 1996) . References. |
