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 2.3. Optimal habitats o f Osprey (P.h.), W hite-tailed Eagle (H.a.) and G olden Eagle (A.ch .) in the Pasvik valley. smaller birds, rodents, large insects, and o th e r prey. The birds o f th is group may be divided into two subgroups: species th at feed mainly on birds and on small m am ­ mals. In relation to their diet and foraging m ethods, they p refer different habitats. Large raptors Large raptors considerably vary in th e ir habitat use, diet, and foraging methods. The Osprey inhabits shores o f rivers, lakes, swamps and o th e r freshwater reser­ voirs (Fig. 2.3). This raptor forages almost exclusively on fish. In the study area the main prey o f the Osprey is mainly relatively small cisco, grayling, bull tro u t and other fish species (Semenov-T ian-Shansky & Gilyazov 1991). When foraging. Ospreys circle above the water; when they notice prey, they swoop and grab it. T he Osprey lives on the coasts o f rivers and lakes and feeds mainly on fish.