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

Taxonomic note

Trochalopteron morrisonianum (del Hoyo and Collar 2016) was previously listed as Garrulax morrisonianus.

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	not a migrant	Forest dependency	medium
Land-mass type		Average mass	73 g

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	15,800 km2
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	unknown	-	-	-
Population trend	stable	-	suspected	-
Generation length	3.51 years	-	-	-

Population justification: The global population size has not been quantified, but the species is described as common (del Hoyo et al. 2007). This species is considered to have a medium dependency on forest habitat, and tree cover is estimated to have declined by only 0.6% within its mapped range over the past 10 years (Global Forest Watch 2022, using Hansen et al. [2013] data and methods disclosed therein). The population trend is therefore considered stable.

Trend justification:   .

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

Country/Territory	IBA Name
Taiwan, China	Chuyanshan Nature Reserve
Taiwan, China	Dawushan Nature Reserve and Shuang-guei Lake Major Wildlife Habitat
Taiwan, China	Daxueshan, Xueshankeng, Wushikeng, Taichung City
Taiwan, China	Nengdan, Nantou County
Taiwan, China	North Section of Xueshan Mountain Range, Taoyuan City
Taiwan, China	Ruei-yan, Nantou County
Taiwan, China	Shei-Pa National Park
Taiwan, China	Upstream Section of Beigang River, Nantou County
Taiwan, China	Yushan National Park

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Temperate	major	resident
Shrubland	Subtropical/Tropical High Altitude	suitable	resident
Altitude	1000 - 3400 m	Occasional altitudinal limits

Threat (level 1)	Threat (level 2)	Impact and Stresses
Climate change & severe weather	Habitat shifting & alteration	Timing		Scope		Severity		Impact
		Future		Whole (>90%)		Unknown		Unknown
		Stresses Indirect ecosystem effects, Ecosystem degradation

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Recommended citation
BirdLife International (2024) Species factsheet: White-whiskered Laughingthrush Trochalopteron morrisonianum. Downloaded from https://datazone.birdlife.org/species/factsheet/white-whiskered-laughingthrush-trochalopteron-morrisonianum 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.