EN
Braun's Bush-shrike Laniarius brauni



Taxonomy

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
- B1ab(i,ii,iii,v) B1ab(i,ii,iii,v); D1

Red List history
Year Category Criteria
2016 Endangered B1ab(i,ii,iii,v)
2012 Endangered B1ab(i,ii,iii,v);C2a(i)
2008 Endangered B1a+b(i,ii,iii,v); C2a(i)
2004 Endangered
2000 Endangered
1996 Endangered
1994 Endangered
1988 Lower Risk/Least Concern
Species attributes

Migratory status not a migrant Forest dependency High
Land mass type Land-mass type - continent
Average mass 54.29999924 g
Extent of occurrence (EOO)

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 590 medium
Number of locations 1-5 -
Fragmentation -
Population and trend
Estimate Data quality Derivation Year of estimate
No. of mature individuals 250-999 poor estimated 2000
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 2-100 - - -
Largest subpopulations - - -
Generation length (yrs) 5.3 - - -

Population justification: The population is estimated at 498-996 individuals (1-2 individuals/km2 x 498 km2 [c.10% EOO]), i.e. within the band 250-999 mature individuals. This equates to 375-1,499 individuals in total, rounded here to 350-1,500 individuals. 2.5 individuals/km2 is the lowest of nine estimates for seven congeners in the BirdLife Population Density Spreadsheet, but this species is considered rare at all known sites, so 1-2 individuals/km2 may be more appropriate, although there have been other population estimates that suggest the population size could be greater than this (e.g. Mills et al. 2011).

Trend justification: The population is suspected to be in decline owing to habitat destruction, through increases in slash-and-burn cultivation and removal of timber trees (W. R. J. Dean in litt. 1999). However, the species occurs in degraded and disturbed forest, which is not thought to be threatened (W. R. J. Dean in litt. 2005), thus no rate of decline is assigned.


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

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Angola Camabatela

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Forest Subtropical/Tropical Moist Lowland major resident
Altitude 600 - 870 m Occasional altitudinal limits  

Threats & impact
Threat (level 1) Threat (level 2) Impact and Stresses
Agriculture & aquaculture Annual & perennial non-timber crops - Small-holder farming Timing Scope Severity Impact
Ongoing Minority (<50%) No decline
Stresses
Ecosystem degradation, Ecosystem conversion
Biological resource use Logging & wood harvesting - Unintentional effects: (subsistence/small scale) [harvest] Timing Scope Severity Impact
Ongoing Minority (<50%) No decline
Stresses
Ecosystem degradation, Ecosystem conversion
Climate change & severe weather Timing Scope Severity Impact
Future Whole (>90%) Unknown
Stresses
Indirect ecosystem effects, Ecosystem degradation

Recommended citation
BirdLife International (2019) Species factsheet: Laniarius brauni. Downloaded from http://www.birdlife.org on 24/03/2019. Recommended citation for factsheets for more than one species: BirdLife International (2019) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 24/03/2019.