NUMBER, SPECIES STRUCTURE AND DISTRIBUTION OF THE SHOREBIRDS AND THE WATERFOWL ON THE "COLD" WINTERING GROUND IN THE HEADSTREAM OF THE RIVER OF ANGARA IN THE SPRING OF 2016
On a «cold» wintering ground in a headstream of the river of Angara, with use before the developed procedure of the account shorebirds and a waterfowl, in 2015 their inventory at the wintering ground closing stage (before the begin- ning of spring migration) is made. The Aggregate number of birds here was kept at level close to an average (slightly more low) for last five years - 16985 individuals (average about 20000 birds). As always, a wintering ground basis compounded Common Goldeneye Bucephala clangula, but number Long­tailed Duck Clangula hyemalis and Goosander Mergus merganser has considerably increased. Typical wintering species of this region all others, as a whole, were marked in very circumscribed quantity - from the solitary birds to 10 individuals. Unlike previous years, the ice ridge along the left shore of Angara was very narrow that strongly complicated the account. Birds sitting on water (especially females) merged on a coloration with a dark background of the shore covered with stones, reducing travelling speed of a vessel and increasing duration of registration works.