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.

5 . Y. Mullari N orthern Wheatears occur in open dry tundra patches with cover o f moss, lichens and sub­ shrub, or just rocks. Bluethroat. Bluethroats live under the scrub cover in the crooked birch forest. IN such places the usually high and dense moss and subshrub layer is sparser, so that patches o f open ground suitable for foraging o f this species are formed. White and Yellow Wagtails. Wagtails occur in relatively open flat habitats w ith ­ out pronounced m icrorelief forms. The White Wagtail does not belong to the p ro p ­ er tundra birds. It prefers to remain near the lagoon coasts, stream s running from the m ountains, on sandy, pebble and crushed rock coasts o f tu n d ra lakes, near stranded floatwood, and along the roads and near hum an settlem ents. Most fre­ quently this bird may be recorded along the open coasts imm ediately near the water (Fig. 3.35). The White Wagtail may be attributed to the special ecological group o f birds o f open coastal habitats. Unlike White Wagtails, Yellow Wagtails inhabit grassland tund ra with o r w ith ­ out scrub, both in the m ountains and lowlands, most frequently in wet places near the water. They avoid patches with too dense or high grass and prefer low sparse and uniform ly distributed grass cover (Fig. 3.35). White and Yellow Wagtails forage generally in a sim ilar m anner. The birds move on the g round w ithout hurry and look for various inverteb rates at a sho rt range. Som etim es they make short runs pursuing mobile insects o r take o ff and 156