Petrochelidon is a genus of birds which includes two cliff-nesting swallows, the Cliff Swallow Petrochelidon pyrrhonota and Cave Swallow Petrochelidon fulva.
Petrochelidon is a genus of birds which includes two cliff-nesting swallows, the Cliff Swallow Petrochelidon pyrrhonota and Cave Swallow Petrochelidon fulva.
