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

Taxonomic note

Cyanoderma erythropterum and C. bicolor (del Hoyo and Collar 2016) were previously lumped as Stachyris erythroptera following Sibley & Monroe (1990, 1993).

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	Not Recognised
2008	Not Recognised
2004	Not Recognised
2000	Not Recognised
1994	Not Recognised
1988	Not Recognised

Migratory status	not a migrant	Forest dependency	high
Land-mass type		Average mass	13 g

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	1,060,000 km2
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	unknown	-	-	-
Population trend	decreasing	-	suspected	-
Generation length	2.23 years	-	-	-

Population justification: The global population size has not been quantified, but the species is described as common in lowland forest (del Hoyo et al. 2007). This species is considered to have a high dependency on forest habitat, and tree cover is estimated to have declined by 15.6% within its mapped range over the past 10 years (Global Forest Watch 2022, using Hansen et al. [2013] data and methods disclosed therein). It is therefore tentatively suspected that this rate of cover loss may have led to a decline of between 1-19% in the species' population size over the same time frame, with a best estimate of reduction being 15-19%.

Trend justification:   .

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

Country/Territory	IBA Name
Malaysia	Bako-Buntal Bay
Malaysia	Bau Limestone
Malaysia	Crocker Range
Malaysia	Danum Valley Conservation Area
Malaysia	Gunung Pueh
Malaysia	Hose-Laga mountains
Malaysia	Kabili-Sepilok
Malaysia	Kinabatangan floodplain
Malaysia	Klias peninsula
Malaysia	Lambir Hills National Park
Malaysia	Lanjak Entimau Wildlife Sanctuary
Malaysia	Maliau Basin Conservation Area
Malaysia	Mount Kinabalu
Malaysia	Mulu - Buda Protected Area
Malaysia	Niah National Park
Malaysia	Sadong-Saribas coast
Malaysia	Similajau National Park
Malaysia	Tabin Wildlife Reserve
Malaysia	Tanjung Datu-Samunsam Protected Area
Malaysia	Tawau Hills Park

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Artificial/Terrestrial	Plantations	suitable	resident
Forest	Subtropical/Tropical Mangrove Vegetation Above High Tide Level	suitable	resident
Forest	Subtropical/Tropical Moist Lowland	suitable	resident
Forest	Subtropical/Tropical Swamp	suitable	resident
Shrubland	Subtropical/Tropical High Altitude	suitable	resident
Altitude	0 - 1200 m	Occasional altitudinal limits

Purpose	Scale
Pets/display animals, horticulture	international

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Recommended citation
BirdLife International (2024) Species factsheet: Grey-hooded Babbler Cyanoderma bicolor. Downloaded from https://datazone.birdlife.org/species/factsheet/grey-hooded-babbler-cyanoderma-bicolor 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.