Red-shouldered Blackbird (Agelaius assimilis)

Red-shouldered Blackbird Agelaius assimilis

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
2024	Least Concern
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	not a migrant	Forest dependency	low
Land-mass type		Average mass	-

Range

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	48,600 km²	medium
Severely fragmented?	no	-

Population

	Estimate	Data quality	Derivation	Year of estimate
Population size	unknown	-	-	-
Population trend	stable	-	suspected	-
Generation length	4.69 years	-	-	-

Population justification: The global population size has not been quantified, but the species is described as uncommon to fairly common (Jaramillo and Burke 1999). The population is suspected to be stable in the absence of evidence for any declines or substantial threats.

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
Cuba	extant	native		yes

Important Bird and Biodiversity Areas (IBA)

Country/Territory	IBA Name
Cuba	Cienaga de Lanier y Sur de la Isla de la Juventud
Cuba	Ciénaga de Zapata
Cuba	Guanahacabibes

Habitats & altitude

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Artificial/Terrestrial	Arable Land	suitable	non-breeding
Artificial/Terrestrial	Pastureland	suitable	non-breeding
Forest	Subtropical/Tropical Mangrove Vegetation Above High Tide Level	marginal	non-breeding
Wetlands (inland)	Bogs, Marshes, Swamps, Fens, Peatlands	major	non-breeding
Wetlands (inland)	Bogs, Marshes, Swamps, Fens, Peatlands	major	breeding
Altitude		Occasional altitudinal limits

Recommended citation
BirdLife International (2024) Species factsheet: Red-shouldered Blackbird Agelaius assimilis. Downloaded from https://datazone.birdlife.org/species/factsheet/red-shouldered-blackbird-agelaius-assimilis 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.