• Summary
• Text account
• Data table and detailed info
• Distribution map
• Reference and further resources

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.

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	Lower Risk/Least Concern
1988	Lower Risk/Least Concern

Migratory status	altitudinal migrant	Forest dependency	medium
Land-mass type		Average mass	-

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	2,170,000 km2
Extent of Occurrence (non-breeding)	3,100,000 km2
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	unknown	-	-	-
Population trend	decreasing	-	suspected	-
Generation length	2.82 years	-	-	-

Population justification: The global population size has not been quantified, but the species is reported to be fairly common, local or scarce (Clement 1999). This species is considered to have a medium dependency on forest habitat, and tree cover is estimated to have declined by 1.1% within its mapped range over the past 10 years (Global Forest Watch 2022, using Hansen et al. [2013] data and methods disclosed therein). Therefore, as a precautionary measure, it is tentatively suspected that this loss of cover may have led to a decline of between 1-19% in the species' population size over the same time frame.

Trend justification:   .

Country/Territory	Presence	Origin	Resident	Breeding visitor	Non-breeding visitor	Passage migrant
Bhutan	extant	native	yes
China (mainland)	extant	native	yes
India	extant	native	yes
Myanmar	extant	native			yes
Nepal	extant	native	yes
Thailand	extant	native			yes

Country/Territory	IBA Name
Nepal	Annapurna Conservation Area
Nepal	Dhorpatan Hunting Reserve
Nepal	Kanchenjungha Conservation Area
Nepal	Khaptad National Park
Nepal	Langtang National Park
Nepal	Makalu Barun National Park
Nepal	Rara National Park
Nepal	Sagarmatha National Park
Nepal	Tamur valley and watershed

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Subtropical/Tropical Swamp	major	resident
Shrubland	Subtropical/Tropical High Altitude	major	resident
Altitude	2200 - 4000 m	Occasional altitudinal limits	1065 - 4200 m

Purpose	Scale
Food - human	subsistence, national
Pets/display animals, horticulture	international

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Recommended citation
BirdLife International (2024) Species factsheet: Collared Grosbeak Mycerobas affinis. Downloaded from https://datazone.birdlife.org/species/factsheet/collared-grosbeak-mycerobas-affinis on 23/12/2024.
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 23/12/2024.