Cliff Swallow

Petrochelidon pyrrhonota ORDER: PASSERIFORMES FAMILY: HIRUNDINIDAE

IUCN Conservation Status: Least Concern

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© Isidor Jeklin/CLO

The gregarious Cliff Swallow nests in large colonies on buildings, cliffs, and under bridges. The gourd-shaped mud nests can number up to several hundred or thousand in a single location.