NT
Indochinese Wren-babbler Napothera danjoui



Taxonomy

Taxonomic note
Rimator danjoui and R. naungmungensis (del Hoyo and Collar 2016) were previously lumped as Jabouilleia danjoui following Sibley & Monroe (1990, 1993).

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.

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

Red List history
Year Category Criteria
2016 Near Threatened C2a(i)
Species attributes

Migratory status not a migrant Forest dependency High
Land mass type Average mass -
Distribution

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 310,000 medium
Number of locations -
Severely Fragmented -
Population and trend
Value Data quality Derivation Year of estimate
No. of mature individuals 10000-19999 poor estimated 2012
Population trend Decreasing poor suspected -
Decline (3 years/1 generation past) - - -
Decline (5 years/1 generation past) - - -
Decline (10 years/1 generation past) - - -
Decline (10 years/3 generation future) - - -
Decline (10 years/3 generation past and future) - - -
Number of subpopulations - - -
Percentage in largest subpopulation - - -
Generation length (yrs) 5.5 - - -

Population justification: The global population size has not been formerly quantified, but the species is described as generally uncommon, although locally common (del Hoyo et al. 2007). The number of mature individuals is preliminarily estimated at fewer than 20,000.

Trend justification: The rate of habitat loss over the past 3 generations of this species is likely to fall in the range of 1-19%, and so a similar rate of decline in the population size may be suspected.


Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Laos N Extant Yes
Vietnam N Extant Yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Vietnam Ke Go
Vietnam Kon Ka Kinh
Vietnam Phong Dien
Vietnam Vu Quang
Vietnam Kon Cha Rang
Vietnam Bach Ma
Vietnam Chu Yang Sin
Vietnam Dakrong
Vietnam Cuc Phuong
Vietnam Khe Net
Vietnam Bi Dup
Vietnam Phuoc Binh
Vietnam Phong Nha
Vietnam Ke Bang
Vietnam Pu Mat
Vietnam Lo Xo Pass
Vietnam Kon Plong
Vietnam Tay Con Linh
Vietnam Truong Son
Laos Eastern Bolikhamxay Mountains
Laos Nakai-Nam Theun
Vietnam Bi Dup - Nui Ba

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Forest Subtropical/Tropical Moist Lowland major resident
Forest Subtropical/Tropical Moist Montane major resident
Altitude 50 - 2100 m Occasional altitudinal limits  

Threats & impact
Threat (level 1) Threat (level 2) Impact and Stresses
Agriculture & aquaculture Annual & perennial non-timber crops - Agro-industry farming 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: (large scale) [harvest] Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Declines Medium Impact: 6
Stresses
Ecosystem degradation
Biological resource use Logging & wood harvesting - Unintentional effects: (subsistence/small scale) [harvest] Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Declines Medium Impact: 6
Stresses
Ecosystem degradation
Climate change & severe weather Habitat shifting & alteration Timing Scope Severity Impact
Future Whole (>90%) Unknown Unknown
Stresses
Indirect ecosystem effects, Ecosystem degradation

Recommended citation
BirdLife International (2022) Species factsheet: Napothera danjoui. Downloaded from http://www.birdlife.org on 29/06/2022. Recommended citation for factsheets for more than one species: BirdLife International (2022) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 29/06/2022.