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
Number of locations -
Severely Fragmented -
Population and trend
Value Data quality Derivation Year of estimate
No. of mature individuals unknown not applicable not applicable 0
Population trend Stable suspected -
Decline (3 years/1 generation past) - - -
Decline (5 years/1 generation past) - - -
Decline (10 years/1 generation past) - - -
Decline (10 years/3 generation future) - - -
Decline (10 years/3 generation past and future) - - -
Number of subpopulations - - -
Percentage in largest subpopulation - - -
Generation length (yrs) 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 Occurrence status Presence Resident Breeding Non-breeding Passage
Australia N Extant
Bangladesh N Extant
Bhutan N Extant Yes
Brunei V Extant
Cambodia N Extant
China (mainland) N Extant Yes
Christmas Island (to Australia) N Extant
Guam (to USA) N Extant Yes
Hong Kong (China) N Extant Yes
India N Extant Yes
Indonesia N Extant
Japan N Extant Yes
Kazakhstan N Extant Yes
Laos N Extant
Malaysia N Extant
Maldives V Extant
Marshall Islands N Extant Yes
Mongolia N Extant Yes
Myanmar N Extant Yes
Nepal N Extant Yes
New Zealand V Extant
North Korea N Extant Yes
Northern Mariana Islands (to USA) N Extant Yes
Pakistan N Extant Yes
Papua New Guinea N Extant
Philippines N Extant
Russia N Extant Yes
Russia (Asian) N Extant Yes
Russia (Central Asian) N Extant Yes
Seychelles V Extant
Singapore N Extant
South Korea N Extant Yes
Sri Lanka V Extant Yes
Taiwan, China N Extant Yes
Thailand N Extant Yes
Timor-Leste N Extant Yes
United Arab Emirates V Extant Yes
United Kingdom V Extant
USA V Extant
Vietnam N Extant

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 (2022) Species factsheet: Apus pacificus. Downloaded from http://www.birdlife.org on 05/07/2022. Recommended citation for factsheets for more than one species: BirdLife International (2022) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 05/07/2022.