Transvolcanic Jay (Aphelocoma ultramarina) - BirdLife species factsheet

Transvolcanic Jay Aphelocoma ultramarina

Current view: Data table and detailed info

Taxonomy

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
2020	Least Concern
2016	Least Concern
2013	Least Concern
2012	Least Concern
2008	Not Recognised
2004	Not Recognised
2000	Not Recognised
1994	Not Recognised
1988	Not Recognised

Species attributes

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

Range

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	97,900 km²	medium
Severely fragmented?	no	-

Population

	Estimate	Data quality	Derivation	Year of estimate
Population size	50000-499999 mature individuals	poor	estimated	2015
Population trend	decreasing	-	suspected	-
Generation length	7.3 years	-	-	-

Population justification: The global population is estimated to number 50,000-499,999 mature individuals (Partners in Flight 2019).

Trend justification: This species is undergoing a small decline (Partners in Flight 2019).

Country/territory distribution

Country/Territory	Presence	Origin	Resident	Breeding visitor	Non-breeding visitor	Passage migrant
Mexico	extant	native	yes

Important Bird and Biodiversity Areas (IBA)

Country/Territory	IBA Name
Mexico	Sierra de Zongolica-Tenango
Mexico	Tlanchinol y Bosques de Montaña del Noreste de Hidalgo

Habitats & altitude

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Subtropical/Tropical Moist Lowland	suitable	resident
Forest	Subtropical/Tropical Moist Montane	major	resident
Altitude	1200 - 3400 m	Occasional altitudinal limits

Recommended citation
BirdLife International (2024) Species factsheet: Transvolcanic Jay Aphelocoma ultramarina. Downloaded from https://datazone.birdlife.org/species/factsheet/transvolcanic-jay-aphelocoma-ultramarina 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.