The Whiskered Tern is a small water bird found in warm regions across Europe, Asia, and Africa that hunts for fish and insects by diving into lakes and wetlands. It matters because its populations serve as indicators of the health of freshwater habitats, and changes in their numbers can signal environmental problems in these ecosystems.
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The whiskered tern (Chlidonias hybrida) is a tern in the family Laridae. The genus name is from Ancient Greek khelidonios, "swallow-like", from khelidon, "swallow". The specific hybridus is Latin for hybrid; Peter Simon Pallas thought it might be a hybrid of white-winged black tern and common tern, writing "Sterna fissipes [Chlidonias leucopterus] et Hirundine [Sterna hirundo] natam".
Subspecies
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