Field signs. Maritime duck medium-size (mass up to 1 kg). At the pinnacle of all birds brilliant mirror with the blue otlivom. A male spring back, neck and neck black, white head with a green stain on the back of his head. Breast and sides kashtanovo-red, mid-chest and belly black. Beak and legs blue-gray, reddish eyes. Female and young fox-brown with a cross pattern. Very silent. Unlike other gag, flying high - in 30-50 meters of surface water (Syroechkovsky, Rogacheva, 1995).  Distribution. Jacks to the west (reliably) to the Lena Delta. Is not enough clear indications of nesting in the northern Taimyr is only for AF Middendorfa (1869) and VM Sdobnikova (1959). Few birds and nomadic gaggle in the north-west coast of Taimyr met on several occasions (Walter, 1902; Birulya, 1907; Sdobnikov, 1959). NV Vronsky (1986) is constantly seen in summer Siberian gag on a segment of Dickson coast to the mouth of the river. Sluggard (Beach Haritona Lapteva), but evidence of their nesting is not found. In the vicinity of Dickson to spill streams in June 1982 and kept a couple of gag in early July, there also warned many times met a single male in the river estuaries. Uboynoy (60 km east of Dickson) and the lake depressions in the lower river. Sluggard (75 ° 16 'N) in summer 1983 and 1984. NV Vronsky noted gaggle of 10-12 birds in some gaggle dominated by males, others - females (Rogacheva, 1988).
At East Taimyr in the lower reaches of the river. Most Balahnya VN Skalon 17 June, 1933 extracted from a small gaggle of male Siberian gagi. There was a meeting at the Central Taimyr. 10 Jul, 1979, two females and a male kept in the stae moryanok on a lake in the Gulf Okrugly (Pool district. Lower Taimyr) (roads, Kokorev, 1981). NV Matyushenko (1983) in the 1975-1981 biennium. In June and July has seen the Siberian gag in the basin of the river. Bikady (East Taimyr) and a pair of small gaggle appeared in a 10 x June, in July marked flocks of 10-30 birds (and males and females) coming down the river to the east. According NV Matyushenkova they were single and nepolovozrelye birds coming to molt to the sea. 29 June, 1981 on the river. Malahaytari he met a couple of gag with clustered behavior. The nest was unable to find. In the Village area. Khatanga had produced a copy of the Siberian gagi, Okol'covannaja to zimovke off the coast of Alaska (Rogacheva, 1988). Nesting species in the northern Taimyr proved in the 1990-1992 biennium. Arctic expedition IEMEZH Russian Academy of Sciences (Syroechkovsky, Rogacheva, 1995). Habitats. In gnezdovoe time - small lakes Seaside tundra. The rest of the year - at sea (Syroechkovsky, Rogacheva, 1995). Reproduction. Nest - fossa, vystlannaya dry grass, moss and down. Kladka - 6-7, sometimes up to 10 yellow-or-Olive burovato eggs (Syroechkovsky, Rogacheva, 1995). Nutrition. In the sea - marine invertebrates (mostly shellfish), summer tundra lakes - mainly crustaceans (bokoplavy, etc.) As well as shellfish and chironomid larvae and rucheynikov (Syroechkovsky, Rogacheva, 1995). Number. Everywhere negligible, in Central Siberia meets unit (Syroechkovsky, Rogacheva, 1995). References. |
