Genus
Petrochelidon (Cliff swallows and allies)
Petrochelidon pyrrhonota. Photo: (c) Dean Hester, some rights reserved (CC BY-NC-ND)
Petrochelidon is a genus of birds known as cliff-nesting swallows. The genus name Petrochelidon is from the Ancient Greek words petros, “rock”, and khelidon, “swallow”.
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