• Summary
• Text account
• Data table and detailed info
• Distribution map
• Reference and further resources

Taxonomic note
Aerodramus orientalis (del Hoyo and Collar 2014) was previously placed in the genus Collocalia.

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.

Red List criteria met

Critically Endangered	Endangered	Vulnerable
-	-	-

Red List history

Year	Category	Criteria
2023	Data Deficient
2016	Data Deficient
2012	Data Deficient
2008	Data Deficient
2004	Data Deficient
2000	Data Deficient
1996	Data Deficient
1994	Data Deficient
1988	Lower Risk/Least Concern

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

	Estimate	Data quality
Severely fragmented?	no	-

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

Population justification: The population size of this species has not been quantified. The species is only known from three specimens, and recent records (eBird 2023) remain unconfirmed due to the difficulty of identifying this species in the field. Furthermore, its validity as a species is uncertain: features previously used to distinguish the species have also been found in Uniform Swiftlet A. vanikorensis and it has been suggested to subsume A. orientalis into A. vanikorensis (Tarburton 2018).

Trend justification: The current population trend is unknown as the species is only known from three specimens and there is little information of its ecological requirements.

Country/Territory	Presence	Origin	Resident	Breeding visitor	Non-breeding visitor	Passage migrant
Papua New Guinea	extant	native	yes
Solomon Islands	extant	native	yes

Country/Territory	IBA Name
Solomon Islands	Kolombangara Upland Forest

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Subtropical/Tropical Moist Montane	suitable	resident
Altitude		Occasional altitudinal limits

Threat (level 1)	Threat (level 2)	Impact and Stresses
Climate change & severe weather	Habitat shifting & alteration	Timing		Scope		Severity		Impact
		Future		Whole (>90%)		Unknown		Unknown
		Stresses Indirect ecosystem effects, Ecosystem degradation

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Recommended citation
BirdLife International (2024) Species factsheet: Mayr's Swiftlet Aerodramus orientalis. Downloaded from https://datazone.birdlife.org/species/factsheet/mayrs-swiftlet-aerodramus-orientalis 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.