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

Taxonomic note

Trochalopteron ngoclinhense (del Hoyo and Collar 2016) was previously listed as Garrulax ngoclinhensis.

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.
Eames, J. C.; Le Trong Trai; Nguyen Cu. 1999. A new species of Laughingthrush (Passeriformes: Garrulacinae) from the Western Highlands of Vietnam. Bulletin of the British Ornithologists' Club 119: 4-15.

Red List criteria met

Critically Endangered	Endangered	Vulnerable
-	B1ab(i,ii,iii,iv,v)+2ab(i,ii,iii,iv,v)	B1ab(i,ii,iii,iv,v)+2ab(i,ii,iii,iv,v); D2

Red List history

Year	Category	Criteria
2018	Endangered	B1ab(i,ii,iii,iv,v)+2ab(i,ii,iii,iv,v)
2016	Vulnerable	D2
2012	Vulnerable	D2
2008	Vulnerable	D2
2005	Vulnerable
2004	Vulnerable
2000	Vulnerable
1994	Not Recognised
1988	Not Recognised

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

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	590 km2	medium
Area of Occupancy (breeding/resident)	65 km2
Number of locations	2	-
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	1000-2499 mature individuals	poor	suspected	2000
Population trend	decreasing	poor	inferred	2009-2023
Generation length	4.7 years	-	-	-

Population justification: Uncommon within a very small range, so placed in the band 1,000-2,499 mature individuals. This equates to 1,500-3,749 individuals in total, rounded here to 1,500-4,000 individuals. The estimate is provisional and requires confirmation.

Trend justification: Although the status of this species is very poorly known, it is thought that a slow decline may be occurring, owing to habitat degradation and trapping within its likely range (S. Mahood in litt. 2018).

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

Country/Territory	IBA Name
Vietnam	Kon Plong
Vietnam	Ngoc Linh

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Subtropical/Tropical Moist Montane	major	resident
Altitude	1480 - 2200 m	Occasional altitudinal limits

Threat (level 1)	Threat (level 2)	Impact and Stresses
Agriculture & aquaculture	Annual & perennial non-timber crops - Shifting agriculture	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		Stresses Ecosystem degradation, Ecosystem conversion
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		Majority (50-90%)		Slow, Significant Declines		Medium Impact: 6
		Stresses Species mortality
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

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Recommended citation
BirdLife International (2024) Species factsheet: Golden-winged Laughingthrush Trochalopteron ngoclinhense. Downloaded from https://datazone.birdlife.org/species/factsheet/golden-winged-laughingthrush-trochalopteron-ngoclinhense 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.