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.
Critically Endangered | Endangered | Vulnerable |
---|---|---|
- | - | - |
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 |
Migratory status | not a migrant | Forest dependency | medium |
Land-mass type | Average mass | - |
Estimate | Data quality | |
---|---|---|
Extent of Occurrence (breeding/resident) | 2,700,000 km2 | |
Severely fragmented? | no | - |
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 | 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 |
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 |
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 |
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 | ||||||
|
|||||||||
Agriculture & aquaculture | Wood & pulp plantations - Small-holder plantations | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
|||||||||
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 | ||||||
|
|||||||||
Biological resource use | Logging & wood harvesting - Unintentional effects: (large scale) [harvest] | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
|||||||||
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 | ||||||
|
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.