LC
Pacific Swift Apus pacificus



Taxonomy

Taxonomic source(s)
AERC TAC. 2003. AERC TAC Checklist of bird taxa occurring in Western Palearctic region, 15th Draft. Available at: #http://www.aerc.eu/DOCS/Bird_taxa_of _the_WP15.xls#.
Christidis, L. and Boles, W.E. 2008. Systematics and Taxonomy of Australian Birds. CSIRO Publishing, Collingwood, Australia.
Cramp, S. and Simmons, K.E.L. (eds). 1977-1994. Handbook of the birds of Europe, the Middle East and Africa. The birds of the western Palearctic. Oxford University Press, Oxford.
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.
Turbott, E.G. 1990. Checklist of the Birds of New Zealand. Ornithological Society of New Zealand, Wellington.

IUCN Red List criteria met and history
Red List criteria met
Critically Endangered Endangered Vulnerable
- - -

Red List history
Year Category Criteria
2016 Least Concern
2012 Least Concern
2009 Least Concern
2008 Least Concern
2004 Least Concern
2000 Lower Risk/Least Concern
1994 Lower Risk/Least Concern
1988 Lower Risk/Least Concern
Species attributes

Migratory status full migrant Forest dependency low
Land-mass type Average mass 41 g
Distribution

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 27,600,000
Extent of Occurrence non-breeding (km2) 41,000,000
Severely fragmented? no -
Population and trend
Value Data quality Derivation Year of estimate
Number of mature individuals unknown not applicable not applicable 0
Population trend stable suspected -
Generation length (years) 12.5 - - -

Population justification: The global population size has not been quantified, but the species is reported to be generally common throughout most of its breeding range except Pakistan (del Hoyo et al. 1999). National population estimates include: < c.10,000 breeding pairs and c.1,000-10,000 individuals on migration in China; c.100-10,000 breeding pairs and c.50-1,000 individuals on migration in Taiwan; c.100-100,000 breeding pairs and c.50-10,000 individuals on migration in Korea; c.10,000-100,000 breeding pairs and c.1,000-10,000 individuals on migration in Japan and c.10,000-100,000 breeding pairs and c.1,000-10,000 individuals on migration in Russia (Brazil 2009).

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 Non-breeding Passage
Australia extant native
Bangladesh extant native
Bhutan extant native yes
Brunei extant vagrant
Cambodia extant native
China (mainland) extant native yes
Christmas Island (to Australia) extant native
Guam (to USA) extant native yes
Hong Kong (China) extant native yes
India extant native yes
Indonesia extant native
Japan extant native yes
Kazakhstan extant native yes
Laos extant native
Malaysia extant native
Maldives extant vagrant
Marshall Islands extant native yes
Mongolia extant native yes
Myanmar extant native yes
Nepal extant native yes
New Zealand extant vagrant
North Korea extant native yes
Northern Mariana Islands (to USA) extant native yes
Pakistan extant native yes
Papua New Guinea extant native
Philippines extant native
Russia extant native yes
Russia (Asian) extant native yes
Russia (Central Asian) extant native yes
Seychelles extant vagrant
Singapore extant native
South Korea extant native yes
Sri Lanka extant vagrant yes
Taiwan, China extant native yes
Thailand extant native yes
Timor-Leste extant native yes
United Arab Emirates extant vagrant yes
United Kingdom extant vagrant
USA extant vagrant
Vietnam extant native

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Terrestrial Urban Areas suitable breeding
Artificial/Terrestrial Urban Areas suitable non-breeding
Forest Boreal suitable breeding
Forest Boreal suitable non-breeding
Forest Temperate suitable breeding
Forest Temperate suitable non-breeding
Altitude 0 - 4000 m Occasional altitudinal limits  

Recommended citation
BirdLife International (2023) Species factsheet: Apus pacificus. Downloaded from http://datazone.birdlife.org/species/factsheet/pacific-swift-apus-pacificus on 23/09/2023. Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from http://datazone.birdlife.org on 23/09/2023.