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Aerodramus is a genus of small, dark, cave-nesting birds in the Collocaliini tribe of the swift family Apodidae.
The genus name combines the Ancient Greek aer meaning "air" with -dromos meaning "-racer" (from trekho "to run").

1/ Edible-nest swiftlet (Yến hông xám, Aerodramus fuciphagus), also known as the white-nest swiftlet

2/ Himalayan swiftlet (Yến núi, Aerodramus brevirostris) 

3/ Mossy-nest swiftlet (Yến rêu, Aerodramus salangana)