Shukshina Maria S. RussiaKaliningradDirectorate of the Federal Service for Supervision of Natural Resource Usage in the Kalinigrad Region, 5387 box, Kaliningrad 236035, Russiaschuksch_masch@mail.ru Author's articles FORAGING BEHAVIOR FEATURES OF THE BLACKBIRD TURDUS MERULA L. AND FIELDFARE TURDUS PILARIS L. (TURDIDAE, PASSERIFORMES)