This species qualifies as Vulnerable because it has a small population on one island and is confined, when breeding, to just two caves, and hence is susceptible to stochastic events and human activities. If the population were shown to be in decline it may warrant uplisting to a higher threat category.
Sibley, C. G.; Monroe, B. L. 1990. Distribution and taxonomy of birds of the world. Yale University Press, New Haven, USA.
Aerodramus sawtelli Collar and Andrew (1988), Aerodramus sawtelli sawtelli Collar and Andrew (1988)
10 cm. Small, dark swift. All sooty-brown, slightly lighter below. Square tail. Voice Sharp chirps while foraging, echo-locating clicks in caves.
Fullard, J. H.; Barclay, R. M. R.; Thomas, D. W. 2010. Observations on the behavioural ecology of the Atiu Swiftlet Aerodramus sawtelli. Bird Conservation International 20(4): 385-391.
Holyoak, D. T. 1974. Undescribed land birds from the Cook Islands, Pacific Ocean. Bulletin of the British Ornithologists' Club 94: 145-150.
McCormack, G. 1997. Cook Islands: an oceanic oasis. World Birdwatch 19: 13-16.
Pratt, H. D.; Bruner, P. L.; Berrett, D. G. 1987. A field guide to the birds of Hawaii and the tropical Pacific. Princeton University Press, Princeton.
SPREP. 1999. Proceedings of the Polynesian Avifauna Conservation Workshop held in Rarotonga, 26-30 April 1999.
Steadman, D. W. 1989. Extinctions of birds in Eastern Polynesia: a review of the records and comparisons with other Pacific Island Groups. Journal of Archaeological Science 16: 177-205.
Tarburton, M. K. 1990. Breeding biology of the Atiu Swiftlet. Emu 90: 175-179.
Further web sources of information
View photos and videos, and hear sounds of this species from the Internet Bird Collection
Text account compilers
Derh, M., Harding, M., Mahood, S., Shutes, S., Stattersfield, A.
McCormack, G., Pilgrim, J.
IUCN Red List evaluators
Butchart, S., Symes, A.
BirdLife International (2013) Species factsheet: Collocalia sawtelli. Downloaded from http://www.birdlife.org on 07/12/2013. Recommended citation for factsheets for more than one species: BirdLife International (2013) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 07/12/2013.
This information is based upon, and updates, the information published in BirdLife International (2000) Threatened birds of the world. Barcelona and Cambridge, UK: Lynx Edicions and BirdLife International, BirdLife International (2004) Threatened birds of the world 2004 CD-ROM and BirdLife International (2008) Threatened birds of the world 2008 CD-ROM. These sources provide the information for species accounts for the birds on the IUCN Red List.
To provide new information to update this factsheet or to correct any errors, please email BirdLife
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Additional resources for this species
|Current IUCN Red List category||Vulnerable|
|Species name author||Holyoak, 1974|
|Population size||mature individuals|
|Distribution size (breeding/resident)||27 km2|
|Links to further information|
|- Additional Information on this species|