title: Breeding Biology of Blackheaded Wagtail Motacilla feldegg Michahhelles, 1830 (Passeriformes, Motacillidae, Motacillinae) in South of Russia
abstract: Species-specific features of blackheaded wagtail Motacilla feldegg Michahelles, 1830 (Passeriformes, Motacillidae, Motacillinae) breeding biology were identified in south of Russia. A tendency to current species range shift is traced. Critical estimation of literary information about some peculiarities of reproduction and ecology of black-headed wagtail is carrying out on boundary XIX-XXI centuries, estimation of contemporary quantity, limited factories and regularities of species distribution o
journal: International Journal of Biology