Collocalia is a genus of swifts, contaning some of the smaller species termed "swiftlets". Formerly a catch-all genus for these, a number of its erstwhile members are now normally (though not by all authors) placed in Aerodramus.

Remaining in Collocalia are:

• Glossy Swiftlet, Collocalia esculenta
• Grey-rumped Swiftlet, Collocalia (esculenta) marginata
• Cave Swiftlet, Collocalia linchi
• Pygmy Swiftlet, Collocalia troglodytes

An Early Miocene fossil swiftlet from the famous Riversleigh deposits of Australia was described as Collocalia buday. This as well as a right ulna (MNZ S42799) found at the Manuherikia River in Otago, New Zealand and dating from the Early to Middle Miocene (Awamoan to Lillburnian, 19-16 million years ago) would probably go into Aerodramus too.

Footnotes

References

• (2005): A New Flightless Gallinule (Aves: Rallidae: Gallinula) from the Oligo-Miocene of Riversleigh, Northwestern Queensland, Australia. (2005) Records of the Australian Museum 57(2): 179–190. ODF fulltext
• (2007): Miocene waterfowl and other birds from central Otago, New Zealand. J. Syst. Palaeontol. 5(1): 1-39. (HTML abstract)