title: Distribution of Sibling Species Yellow-legged Gull, Larus michahellis and Caspian Gull, Larus cachinnans (Charadriiformes, Laridae), on the Black Sea Coast
abstract: Distribution of sibling species Larus cachinnans (Pallas, 1811) and Larus michahellis (J. F. Naumann 1840) were studied on coast of the Black Sea. Originally, Larus michahellis breeds on seaside cliffs and rocky islets of the Southern part of the Black Sea and of the Crimean Peninsula. Having adapted to breeding on the roofs of buildings, this species is spread to the north along the seaside: to Novorossiysk on the eastern coast, to Constanta on the western one. Additionally, an isolated populat
journal: Zoodiversity