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

Taxonomic note

Chloropsis cochinchinensis and C. moluccensis (del Hoyo and Collar 2016) were previously lumped as C. cochinchinensis following Wells et al. (2003).

 

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
-	A2d+3d+4d	A2d+3d+4d

Red List history

Year	Category	Criteria
2021	Endangered	A2d+3d+4d
2019	Endangered	A2d+3d+4d
2016	Near Threatened	A2d+3d+4d
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	medium
Land-mass type		Average mass	24 g

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	142,000 km2
Number of locations	1-6	-
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	unknown	-	-	-
Population trend	decreasing	-	inferred	2014-2024
Rate of change over the past 10 years/3 generations (longer of the two periods)	50-79%	-	-	-
Rate of change over the future 10 years/3 generations (longer of the two periods)	50-79%	-	-	-
Rate of change over the past & future 10 years/3 generations (longer of the two periods)	50-79%	-	-	-
Generation length	3.38 years	-	-	-

Population justification: The population size is unknown, but the species has been considered rare for some time (Wells 2016). More recently it has been only infrequently observed at sites where it was easy to see in the recent past (Eaton in litt. 2016), or indeed has completely disappeared (S. van Balen in litt. 2019). During the ‘Big Month’ citizen science event (conducted in January 2020 comprising 22,054 checklists) across Java and Bali, the species was for example recorded in just 3 (0.04%) of the 7,935 tetrads (2 × 2 km squares) visited (T. Squires and S. Marsden in litt. 2020).

Trend justification: The population is suspected to be undergoing a very rapid decline owing to capture for the cage bird trade, which may be exacerbated by past habitat loss greatly reducing the area of suitable habitat. The entire range is considered accessible to trappers and the species is assessed as being in high demand for the cagebird trade (Symes et al. 2018). Leafbird species experienced a surge in popularity as cagebirds after 2012, with all species becoming more desirable and numbers being sold increasing rapidly. Initial reports from repeated visits to sites where the species was commonly seen in the late 1990s are that the species has disappeared or is now very scarce (B. van Balen in litt. 2019). Expert opinion from the IUCN SSC Asian Songbird Trade Specialist Group (ASTSG in litt. 2018) considers that the current suspected rate of decline in the species exceeds 50% and, in the absence of any expectation of a reduction in market demand or restriction on trapping activity, is expected to continue at this very rapid rate.

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

Country/Territory	IBA Name

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Artificial/Terrestrial	Plantations	suitable	resident
Artificial/Terrestrial	Rural Gardens	suitable	resident
Forest	Subtropical/Tropical Moist Lowland	major	resident
Forest	Subtropical/Tropical Moist Montane	suitable	resident
Altitude	100 - 1800 m	Occasional altitudinal limits

Threat (level 1)	Threat (level 2)	Impact and Stresses
Agriculture & aquaculture	Annual & perennial non-timber crops - Scale Unknown/Unrecorded	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Negligible declines		Low Impact: 4
		Stresses Ecosystem degradation, Ecosystem conversion
Biological resource use	Hunting & trapping terrestrial animals - Intentional use (species is the target)	Timing		Scope		Severity		Impact
		Ongoing		Majority (50-90%)		Very Rapid Declines		High Impact: 8
		Stresses Species disturbance, Species mortality

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

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Recommended citation
BirdLife International (2024) Species factsheet: Javan Leafbird Chloropsis cochinchinensis. Downloaded from https://datazone.birdlife.org/species/factsheet/javan-leafbird-chloropsis-cochinchinensis 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.