Характеристика питания птенцов некоторых видов насекомоядных синантропных птиц

Abstract

When studying the nestlings nutrition Hirundo rustica L. (25 tests), Delichon urbica L. (54 tests), Motacilla alba L. (33 tests) and Muscicapa striata (P a I I.) (44 tests), 23, 59, 19, 38 species or groups of food objects were detected respectively. Such variability of nutrition objects permits these bird:1 quickly switch over to other more available food in case of necessity.