О южных границах распространения некоторых элементов гнездовой орнитофауны равнинного и предгорного Крыма

Abstract

Over the recent decades the Crimean ornithofauna has been essentially changing both its composition and range borders. This investigation is aimed at defining more precisely the borders of distribution of those bird species in the South Crimea, which major part of the range includes plains and foothills.