Caspian Tern

Caspian Tern is the largest tern in the world, 48 to 60 cm long with a wingspan of 127 to 145 cm and a weight of 530 to 782 g. Adults have black legs, a long thick red-orange bill with a small black tip, a black cap, white neck, belly and tail, and pale grey upperparts. Unlike many terns it keeps its black cap in winter, with some white streaking on the forehead. (Wikipedia, general species account).

Caspian Tern is the world's largest species of tern, with a subcosmopolitan but scattered distribution. Despite its extensive range, it is monotypic of its genus, and has no accepted subspecies. Their breeding habitat is large lakes and ocean coasts in North America (including the Great Lakes), and locally in Europe (mainly around the Baltic Sea and Black Sea), Asia, Africa, and Australasia (Australia and New Zealand). (Wikipedia, general species account).