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24-28 cm (9Â½-11 in)
 Similar Species
Summer adults resemble Common Terns more than Black Terns due to their black and white heads, but the short, broad wings and tails are typical of 'marsh terns'. and their underparts are so dark that the white cheeks stand out boldly.
Juveniles have a dark mantle reminiscent of the saddle on a White-winged Black Tern; however, it is not so dark in the Whiskered Tern. In addition the rump is not as conspicuously white as on a White-winged Black Tern and the wings of a Whiskered Tern are a more uniform grey.
The bill is heavier than in other 'marsh terns'.
Europe and Asia. They migrate to sub-Saharan west Africa in the winter, although a few birds will remain in the Mediterranean. Birds which breed in eastern Europe winter in large numbers in the Nile Delta and eastern and southern Africa.
Chlidonias hybrida has three subspecies:
The subspecies swinhoei, indicus, sclateri and fluviatilis are no longer recognized.
Inland marshes, pools and fishponds.
The diet includes terrestrial and aquatic insects, spiders, frogs, tadpoles, small crabs, shrimps and small fish.
The nest is a heap of aquatic vegetation or dry grass, placed either on floating vegetation. They nest in colonies.
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