For ecology of black-headed wagtail <i>Motacilla feldegg Michahelles</i>, 1830 ( <i>Passeriformes, Motacillidae, Motacillinae</i>)
Critical estimation of literary information about some peculiarities of ecology of black-headed wagtail Motacilla feldegg Michahelles, 1830 ( Passeriformes, Motacillidae, Motacillinae) is carrying out on boundary XIX—XX centuries, estimation of contemporary quantity, limited factories and regularities of species distribution on research territory of European part of Russia and the Middle Volga Region are gived.