See text Collocalia is a genus of swifts, containing some of the smaller species termed "swiftlets".

The genus Collocalia was introduced by the English zoologist George Robert Gray in 1854.

[2][3] The name Collocalia combines the classical Greek words kolla meaning "glue" and kalia for "nest".

[5][6] The genus now contains the following 11 species:[6] An Early Miocene fossil swiftlet from the Riversleigh deposits of Australia was described as Collocalia buday.

Dating from the Early to Middle Miocene (Altonian, 19–16 million years ago),[8] probably belongs to Aerodramus.