Heuglin's gull (Larus fuscus heuglini) is named after Martin Theodor von Heuglin (1824-1876), a German explorer and ornithologist. Also known as the Siberian gull, it is now usually treated as a subspecies of the lesser black-backed gull. A large gull with a rounded head, strong bill and long legs and wings, it migrates from northern Europe south to winter in Southwest Asia, the Indian Subcontinent, East Asia, and East Africa. It is a vagrant in Western Europe.