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Tern, Caspian
Bird Info
Bird Info
Conservation status
Scientific Name:
Hydroprogne caspia
Afghanistan, Africa, Alabama, Alaska, Albania, Alberta, Angola, Anguilla, Antigua and Barbuda, Arizona, Arkansas, Asia, Atlantic Islands, Australasia, Australia, Austria, Bahamas, Bangladesh, Barbados, Belarus, Belgium, Belize, Bermuda, Bosnia and Herzegovina, Botswana, British Columbia, British Isles, British Virgin Islands, Brunei, Bulgaria, Burundi, California, Cambodia, Canada, Caribbean, Cayman Islands Read more
Related Reading
The global population is estimated to number c.240,000-420,000 individuals (Wetlands International 2006), while national population estimates include: c.50-1,000 individuals on migration and c.50-1,000 wintering individuals in China; c.50-1,000 individuals on migration and c.50-1,000 winteri ...
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It is the world's largest tern with a length of 48–60 cm (19–24 in), a wingspan of 127–145 cm (50–57 in) and a weight of 530–782 g (1.2-1.8 lb).[ 2] [ 3] Adult birds have black legs, and a long thick red-orange bill with a small black tip. They have a white head with a black cap and white neck, belly and tail. The upper wings and back are pale grey; the underwings are pale with dark primary feathers. In flight, the tail is less forked than other terns and wing tips black on the underside.[ 2] In winter, the black cap is still present (unlike many other terns), but with some white streaking on the forehead. The call is a loud heron-like croak.[ 4] ...
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