LC
Black-throated Laughingthrush Pterorhinus chinensis



Taxonomy

Taxonomic note
Pterorhinus chinensis was previously split as P. chinensis and P. monachus (del Hoyo and Collar 2016), and both were placed in Garrulax before being moved to current genus following Cibois et al. (2018). P. chinensis and P. monachus were split on the basis that monachus has black vs white ear-coverts, lower face and submoustachial area (4); all-darkish-brown underparts with no hint of mid-grey on belly (1); notably smaller size (effect size for male wings –2.82, score 2). Split prompted by molecular evidence (Wu et al. 2012) although comparisons failed to include P. c. germaini, the closest in plumage colour to monachus. However, form ‘lugens’, a dark morph of nominate chinensis found in Indochina and southern China, resembles monachus closely in having dark underparts and an all-dark cheek-patch, suggesting that differences between the two groups may not be as pronounced as scores indicated. Accordingly, monachus is returned to P. chinensis as a subspecies. Five subspecies recognised.

Taxonomic source(s)
Handbook of the Birds of the World and BirdLife International. 2023. Handbook of the Birds of the World and BirdLife International digital checklist of the birds of the world. Version 8. Available at: https://datazone.birdlife.org/userfiles/file/Species/Taxonomy/HBW-BirdLife_Checklist_v8_Dec23.zip.

IUCN Red List criteria met and history
Red List criteria met
Critically Endangered Endangered Vulnerable
- - -

Red List history
Year Category Criteria
2023 Least Concern
2016 Not Recognised
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
Species attributes

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

Estimate Data quality
Extent of Occurrence (breeding/resident) 2,700,000 km2
Severely fragmented? no -
Population
Estimate Data quality Derivation Year of estimate
Population size unknown - - -
Population trend decreasing - inferred 2017-2028
Rate of change over the past 10 years/3 generations (longer of the two periods) 10-19% - - -
Rate of change over the future 10 years/3 generations (longer of the two periods) 10-19% - - -
Rate of change over the past & future 10 years/3 generations (longer of the two periods) 10-19% - - -
Generation length 3.61 years - - -
Number of subpopulations 5-100 - - -
Percentage of mature individuals in largest subpopulation 1-89% - - -

Population justification: The global population size has not been quantified, but the species is described as generally fairly common (del Hoyo et al. 2007) although locally trapping pressure may mean populations are depleted.

Trend justification: The population is inferred to be in decline owing to ongoing habitat destruction and fragmentation and, perhaps more pressingly, because of trapping for the cagebird trade. Remote sensing data (Global Forest Watch 2023, using Hansen et al. [2013] data and methods disclosed therein) indicate that forest loss in this species' range is ongoing at a rate equivalent to 13-14% in three generations. However, this species is tolerant of modified habitats, occurring in, for example, thick wooded scrub. Accordingly, while habitat loss and degradation is assumed to be driving declines (especially where this amounts to total clearance of vegetated habitat), it is not necessarily the case that the percentage of forest loss equates directly to population losses. In parts of its range, especially in Viet Nam, trapping may be driving steeper declines than habitat modifications, with birds used domestically, and for export to Indonesia where the species is highly prized for its song and fetching up to $100 USD (e.g., Shepherd 2011, Shepherd et al. 2016, Leupen et al. 2022). Locally this may be driving very rapid population declines, with subspecies germaini, for example, now very difficult to find in the wild in Viet Nam (J. Eaton pers. comm. 2023). However, in other parts of its range, P. chinensis is subject to little to no trapping pressure. Globally, combining the impacts of habitat loss and degradation, and trapping, the species is suspected of having declined by 10-19% over the past three generations (11 years: 2012-2023) and the same rate is suspected in the future.


Country/territory distribution
Country/Territory Presence Origin Resident Breeding visitor Non-breeding visitor Passage migrant
Cambodia extant native yes
China (mainland) extant native yes
Hong Kong (China) extant introduced yes
Laos extant native yes
Myanmar extant native yes
Taiwan, China extant introduced yes
Thailand extant native yes
Vietnam extant native yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Laos Eastern Bolikhamxay Mountains
Laos Hin Namno
Laos Nakai Plateau
Laos Nakai-Nam Theun
Laos Phou Loeuy
Laos Upper Xe Bangfai
Thailand Doi Pha Chang
Thailand Huai Kha Khaeng
Thailand Kaeng Krachan
Thailand Khao Yai
Thailand Mae Wong
Thailand Thung Yai - Naresuan
Vietnam Bach Ma
Vietnam Ban Bung
Vietnam Ban Thi - Xuan Lac
Vietnam Cat Loc
Vietnam Chu Yang Sin
Vietnam Cuc Phuong
Vietnam Dakrong
Vietnam Ke Bang
Vietnam Ke Go
Vietnam Khe Net
Vietnam Kon Cha Rang
Vietnam Kon Ka Kinh
Vietnam Nam Cat Tien
Vietnam Phong Dien
Vietnam Phong Nha
Vietnam Pu Mat
Vietnam Tam Dao
Vietnam Vu Quang

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Forest Subtropical/Tropical Moist Lowland major resident
Forest Subtropical/Tropical Moist Montane suitable resident
Grassland Subtropical/Tropical Seasonally Wet/Flooded suitable resident
Shrubland Subtropical/Tropical Moist suitable resident
Altitude 0 - 1525 m Occasional altitudinal limits  

Threats & impact
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 Wood & pulp plantations - Small-holder plantations 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%) Slow, Significant Declines Low Impact: 5
Stresses
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, Ecosystem conversion

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

Recommended citation
BirdLife International (2024) Species factsheet: Black-throated Laughingthrush Pterorhinus chinensis. Downloaded from https://datazone.birdlife.org/species/factsheet/black-throated-laughingthrush-pterorhinus-chinensis 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.