The birds of Pasvik / E. I. Khlebosolov, O. A. Makarova, O. A. Khlebosolova [et al. ; English transl. Nikita Chernetsov]. - Ryazan : Golosgubernii, 2007. - 175 с. : ил., портр.

Pine trees with narrow elongated crown are the typical foraging sites o f Siberian Tits. continue to forage in a similar manner on a nearby tree, inspecting it from bottom to top (Fig. 3.19, 3.20). The numbers o f the Willow Til in Pasvik are slightly lower than those o f the Siberian Tit. The average breeding density o f the former species is 1.1 pairs* k m 2. Willow Tits prefer to breed in mixed pine and birch and pure birch forests in the val­ leys o f rivers and large streams (Fig. 3.18). In summer, this species practically does not occur in pine and mixed forests on the galleries above the valleys. In autumn and winter, Willow Tits mainly occur in mixed pine and birch stands and birch forests along the stream valleys, and in birch stands in the valley galleries. Like Siberian Tits, Willow Tits in autumn and winter occur mainly in pairs, less fre­ quently solitary or in groups o f 3—5 birds. Willow Tits feed in trees and bushes that have a well developed, often spherical crow. A typical feature o f the Willow Tit’s foraging behaviour is that it searches for prey throughout the whole tree from bottom to top and from the trunk to the tips o f twigs. Therefore, its behaviour includes various elements. Usually the bird hops and flies above the branches, or hangs from the side or from beneath, picks open prey items and extracts the concealed ones. Willow Tits make no longer stops and do not look for prey when moving along and between the twigs. The bird carefully exam- 137 E.l. Khlebosolov