Bullock's Oriole (Icterus bullockiorum) - BirdLife species factsheet

Bullock's Oriole Icterus bullockiorum

Current view: Data table and detailed info

Taxonomy

Taxonomic note

Taxonomic source(s)
AOU. 1998. Check-list of North American birds. American Ornithologists' Union, Washington, D.C.
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.
Stotz, D. F.; Fitzpatrick, J. W.; Parker, T. A.; Moskovits, D. K. 1996. Neotropical birds: ecology and conservation. University of Chicago Press, Chicago.

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	Not Recognised
1988	Not Recognised

Species attributes

Migratory status	full migrant	Forest dependency	low
Land-mass type		Average mass	38 g

Range

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	4,610,000 km²	medium
Extent of Occurrence (non-breeding)	1,960,000 km²	medium
Severely fragmented?	no	-

Population

	Estimate	Data quality	Derivation	Year of estimate
Population size	unknown	poor	estimated	2009
Population trend	stable	-	suspected	-
Generation length	5 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	Breeding visitor	Non-breeding visitor
Canada	extant	native	yes
Costa Rica	extant	native		yes
Guatemala	extant	native
Honduras	extant	native
Mexico	extant	native
USA	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	Subtropical/Tropical Dry	suitable	non-breeding
Forest	Subtropical/Tropical Dry	suitable	breeding
Forest	Temperate	suitable	non-breeding
Forest	Temperate	suitable	breeding
Altitude	0 - 1800 m	Occasional altitudinal limits

Recommended citation
BirdLife International (2024) Species factsheet: Bullock's Oriole Icterus bullockiorum. Downloaded from https://datazone.birdlife.org/species/factsheet/bullocks-oriole-icterus-bullockiorum on 27/11/2024.
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 27/11/2024.