Caroline Swiftlet (Aerodramus inquietus) - BirdLife species factsheet

Caroline Swiftlet Aerodramus inquietus

Current view: Data table and detailed info

Taxonomy

Taxonomic note
Aerodramus inquietus (del Hoyo and Collar 2014) was previously placed in the genus Collocalia as C. inquieta. Collocalia inquieta (Sibley and Monroe 1990, 1993) was previously split into C. bartschi following Browning (1993) and AOU (1998) and C. inquieta following Browning (1993).

Taxonomic source(s)
del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A. and Fishpool, L.D.C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 1: Non-passerines. Lynx Edicions BirdLife International, Barcelona, Spain and Cambridge, UK.

IUCN Red List criteria met and history

Red List criteria met

Critically Endangered	Endangered	Vulnerable
-	-	-

Red List history

Year	Category	Criteria
2024	Least Concern
2016	Least Concern
2013	Least Concern
2012	Least Concern
2009	Least Concern
2008	Least Concern
2004	Least Concern
2000	Lower Risk/Least Concern
1994	Not Recognised
1988	Not Recognised

Species attributes

Migratory status	not a migrant	Forest dependency	low
Land-mass type		Average mass	-

Range

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	72,800 km²
Severely fragmented?	no	-

Population

	Estimate	Data quality	Derivation	Year of estimate
Population size	unknown	-	-	-
Population trend	stable	-	suspected	-
Generation length	2.95 years	-	-	-

Population justification: The global population size has not been quantified, but the species is described as common to abundant. The population on Yap has not been quantified but the species's population in the rest of its range is estimated to be 83,500 individuals (del Hoyo et al. 1999). The population is suspected to be stable in the absence of evidence for any declines or substantial threats.

Trend justification: The population is suspected to be stable in the absence of evidence for any declines or substantial threats.

Country/territory distribution

Country/Territory	Presence	Origin	Resident	Breeding visitor	Non-breeding visitor	Passage migrant
Micronesia, Federated States of	extant	native		yes

Important Bird and Biodiversity Areas (IBA)

Country/Territory	IBA Name
Micronesia, Federated States of	Mount Winipot / Tol South
Micronesia, Federated States of	Pohnpei Watershed Forest Reserve
Micronesia, Federated States of	Wiya Swiftlet Cave
Micronesia, Federated States of	Yela River Watershed

Habitats & altitude

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Caves and Subterranean Habitats (non-aquatic)	Caves	major	breeding
Forest	Subtropical/Tropical Moist Lowland	suitable	resident
Altitude		Occasional altitudinal limits

Recommended citation
BirdLife International (2024) Species factsheet: Caroline Swiftlet Aerodramus inquietus. Downloaded from https://datazone.birdlife.org/species/factsheet/caroline-swiftlet-aerodramus-inquietus on 23/11/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from https://datazone.birdlife.org/species/search on 23/11/2024.