Home – Home – Jornals – Contemporary Problems of Ecology 2011 number 4

Distribution of black grouse and hazel grouse was evaluated on the basis of the results of bird records from July 16 to August 31, 1959-2005, over the territories of all the natural geographic zones and subzones of West Siberia (with fractioning down to the type of landscape tract). Data averaging over the groups of vegetation map allocations (dynamic series), and other specific averaging procedures, revealed that black grouse is common in north-, middle-, and south-taiga bogs; in sub-taiga pineries; in grassy bogs in combination with halophytic meadows within the boundaries of sub-taiga forests and northern forest-steppe; and at the agricultural land of the northern forest-steppe. Hazel grouse is numerous in southern taiga and dark coniferous middle-taiga forests and their derivatives. The number of hazel grouse individuals in these habitats is larger than in other lands. In general, over the sub-zones, both black grouse and hazel grouse are most numerous in middle and southern taiga and sub-taiga forests. To the north and to the south of these sub-zones the abundance of these species decreases. They were not encountered in tundras and some open forest-steppe and steppe habitats.