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Photo of Gull-billed Tern (Gelochelidon nilotica)

Gull-billed Tern

Gelochelidon nilotica

The gull-billed tern (Gelochelidon nilotica), formerly Sterna nilotica, is a tern in the family Laridae. The genus name is from Ancient Greek gelao, "to laugh", and khelidon, "swallow". The specific niloticus is from Latin and means of the Nile. The Australian gull-billed tern was previously considered a subspecies.

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Photo credit: Eric Kershner/USFWS

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