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.

Figure 3.28. Distribution o f breeding territories o f B luethroats (A), Reed Buntings and Sedge Warblers (B) in the valley of a stream and a river. 1 —forest; 2 —scrub; 3 —young trees on the edge o f forest along the stream; 4 —wet areas. at the base o f hummocks and move slowly on the ground. It is only infrequently that Meadow Pipits make short runs and capture mobile insects. The difference in breeding density o f the two species may be explained by the fact that occurrence o f humm ock -rich m icrohabitats in the study area is m uch smaller than in flat areas. Therefore Meadow Pipits have to occupy and defend large breeding territories that contain sufficient areas o f suitable m icrohabitats. 3 .2 .2 . Birds of coastal scrub The ecological group o f passerines o f coastal scrub includes the Reed Bunting, Sedge Warbler, and Bluethroat. In the recent years, the Little Bunting has become com ­ mon in Pasvik. These species usually co-occur in the old stream valleys overgrown by willows, and along the banks o f the Pasvik covered with scrub. In most typical habitats, the home ranges of these species overlap broadly. The territories o f Reed Buntings and Sedge Warblers include willow scrub along the banks o f rivers and streams. Bluethroat habitats usually stretch as a narrow belt along the border between coastal scrub and for­ est (Fig. 3.28). 148