• 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
2018	Near Threatened	A2c+3c+4c
2016	Near Threatened	A2c+3c+4c
2012	Near Threatened	A2c+3c+4c
2008	Near Threatened	A2c; A3c; A4c
2004	Near Threatened
2000	Lower Risk/Near Threatened
1994	Lower Risk/Near Threatened
1988	Near Threatened

Migratory status	not a migrant	Forest dependency	medium
Land-mass type	Land-mass type - shelf island	Average mass	-

	Estimate	Data quality
Extent of Occurrence breeding/resident (km2)	211,000	medium
Severely fragmented?	no	-

	Value	Data quality	Derivation	Year of estimate
Number of mature individuals	unknown	not applicable	not applicable	0
Population trend	decreasing	poor	suspected	1998-2008
Decline % (10 years/3 generations future)	20-29	-	-	-
Decline % (10 years/3 generations past and future)	20-29	-	-	-
Generation length (years)	4.2	-	-	-

Population justification: The population size is unknown, but the species is described as generally rather uncommon to sparse (del Hoyo et al. 2006).

Trend justification: This species has probably declined owing to loss of forest at the lower margin of its altitudinal range, restricting it to higher elevations, and potentially as a result of capture for trade.

Country/Territory	Presence	Origin	Resident	Breeding	Non-breeding	Passage
Indonesia	extant	native		yes

Country/Territory	IBA Name
Indonesia	Bukit Kaba
Indonesia	Gunung Leuser
Indonesia	Bukit Bahar - Tajau Pecah
Indonesia	Hutan Raya Bukit Barisan
Indonesia	Meranti
Indonesia	Malampah Alahan Panjang
Indonesia	Kerinci Seblat
Indonesia	Gunung Dempo

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Subtropical/Tropical Moist Lowland	major	resident
Forest	Subtropical/Tropical Moist Montane	suitable	resident
Altitude	600 - 1500 m	Occasional altitudinal limits

Threat (level 1)	Threat (level 2)	Impact and Stresses
Agriculture & aquaculture	Annual & perennial non-timber crops - Agro-industry farming	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		Stresses Ecosystem degradation
Agriculture & aquaculture	Annual & perennial non-timber crops - Small-holder farming	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		Stresses Ecosystem degradation, Ecosystem conversion
Biological resource use	Hunting & trapping terrestrial animals - Intentional use (species is the target)	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Negligible declines		Low Impact: 4
		Stresses Species disturbance, Species mortality
Biological resource use	Logging & wood harvesting - Unintentional effects: (large scale) [harvest]	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		Stresses Ecosystem degradation, Ecosystem conversion
Biological resource use	Logging & wood harvesting - Unintentional effects: (subsistence/small scale) [harvest]	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		Stresses Ecosystem degradation
Natural system modifications	Fire & fire suppression - Increase in fire frequency/intensity	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		Stresses Ecosystem degradation

Purpose	Primary form used	Life stage used	Source	Scale	Level	Timing
Pets/display animals, horticulture	-	-		international	non-trivial	recent

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Recommended citation
BirdLife International (2023) Species factsheet: Chloropsis venusta. Downloaded from http://datazone.birdlife.org/species/factsheet/blue-masked-leafbird-chloropsis-venusta on 27/09/2023. Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from http://datazone.birdlife.org on 27/09/2023.