Western Scrub-jay (Aphelocoma californica) | Details

Western Scrub-jay Aphelocoma californica

Current view: Data table and detailed info

Taxonomy

Taxonomic note
Aphelocoma californica and A. insularis (AOU [1998 and supplements]; Sibley and Monroe [1990, 1993]) have been lumped into A. califonica following del Hoyo and Collar (2016).

Taxonomic source(s)
del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A., Fishpool, L.D.C., Boesman, P. and Kirwan, G.M. 2016. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 2: Passerines. Lynx Edicions and 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
2016	Least Concern
2012	Not Recognised
2008	Not Recognised
2004	Not Recognised
2000	Not Recognised
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)	4,590,000 km²	medium
Severely fragmented?	no	-

Population

	Estimate	Data quality	Derivation	Year of estimate
Population size	unknown	-	-	-
Population trend	stable	-	suspected	-
Generation length	8.3 years	-	-	-

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
Mexico	extant	native	yes
USA	extant	native	yes

Important Bird and Biodiversity Areas (IBA)

Country/Territory	IBA Name
USA	Channel Islands - Northern

Habitats & altitude

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Artificial/Terrestrial	Rural Gardens	suitable	resident
Forest	Subtropical/Tropical Mangrove Vegetation Above High Tide Level	suitable	resident
Forest	Subtropical/Tropical Moist Montane	suitable	resident
Shrubland	Mediterranean-type Shrubby Vegetation	suitable	resident
Shrubland	Subtropical/Tropical Dry	major	resident
Altitude	0 - 3000 m	Occasional altitudinal limits

Recommended citation
BirdLife International (2024) Species factsheet: Western Scrub-jay Aphelocoma californica. Downloaded from https://datazone.birdlife.org/species/factsheet/western-scrub-jay-aphelocoma-californica on 22/12/2024.
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 22/12/2024.