NOUN
- North American swallow that lives in colonies and builds bottle-shaped mud nests on cliffs and walls
How To Use cliff swallow In A Sentence
- This hypothesis is supported by correlative and experimental evidence from various species such as kittiwakes, cormorants, house wrens, cliff swallows, and collared flycatchers.
- Cliff swallows are highly colonial passerines that breed throughout most of western North America.
