Field signs. Gus medium-sized, smaller Bean. Weight 2,3-3,2 kg. Afar it seems gray. On his forehead visible white spot, not visiting crown at the belly black spots. Voice - kriklivoe, calls cackle like disyllabic "Kling-Kling ..." (Syroechkovsky, Rogacheva, 1980).  Distribution. The most numerous of geese Taimyr, a characteristic denizen subzones typical tundra, especially the northern part. In subzone Arctic tundra occurs less frequently, but remains first in number gusem in subzone bush tundra places still common, but its strength is 6-7 times lower than Bean (Borzhonov et al, 1971). In areas of the arctic desert and the forest do not nest (Rogacheva, 1988).
In subzone arctic tundra nest everywhere, except, perhaps, coastal tundra of North-East Taimyr (Sdobnikov, 1959). Found in North-West Taimyr (73-75 ° N; Vronsky, 1986) and the North-East Taimyr (74 -- 76 ° N; Sdobnikov, 1959; Dear, Kokorev, 1981). The southern border nesting poorly understood. In the pool Pyasiny not nest south of the mouth Dudypty (Krechmar, 1966), and do not nest in the mountains Putorana (Syroechkovsky, 1961; Zyryanov, Pavlov, 1984, etc.). There Yenisei Gulf in the West Taimyr border, apparently, is somewhere between 70 ° and 71 ° N (Rogacheva, 1988). The bulk of nesting White-goose in Central Siberia is concentrated in the West and Central Taimyr and Gydane. For this type is characterized by uneven, "focal" distribution of territory (Krechmar, 1966). It is also that depending on the density of their spring nesting may change 25 times (Borzhonov, 1974). As a result, determine the total number in the region difficult. AS Martynov (1983) estimates as follows: on the Taimyr in the late 70's - early 80's. There were about 430 thousand White geese, their number is stable, rising slightly reversed. AS Martin leads a picture of zonal distribution of species on the Taimyr: Arctic tundra (north of the mouth and Pyasiny Lake. Taimyr) - 11% of the total, or 47 thousand birds, the northern half of sub-typical tundra - 57% , Or 244 thousand; South half of the typical tundra - 32%, or 138 thousand Despite the fact that modern strength in the goose White Taimyr relatively high and stable, it certainly has declined in comparison with the 1-st half of the twentieth century . (Rogacheva, 1988). Phenology. Spring always arriving later than the Bean. At Pyasine Purinskih lakes in the area of the first geese appeared in late May - early June. Gross passage 5-10 June, but sometimes the passage lasts until June twenties numbers. During the passage of fly separately from other geese flocks of 10-25 birds. Autumn departure from the mid to late September (Syroechkovsky, Rogacheva, 1980). In the autumn passage for the first time we have seen in the Western Sayan (Baikal, Laptsenak, 1996) . Reproduction. Jacks, usually - fossa, umyatye among kochek and moss and rather poorly vystlannye plants down and small feathers. Masonry from three to six eggs, a little more light than the Bean, the size 80h51 mm (Syroechkovsky, Rogacheva, 1980). Home nesting - in the second half of June. Hatching chicks - July 10-30, nasizhivanie - 26-28 days. Males always stick with vyvodkami along with females that have been proven AV Krechmarom. There vyvodkov adults behave bravely than Bean, and near bay Rights. Linka in July and August. In August vyvodki White Bean geese and form a mixed gaggle of 20-40 birds and wander the rivers to rise on the wing at the end of the month (Syroechkovsky, Rogacheva, 1980). References. |
