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(iii) B1ab(iii)

Red List history
Year Category Criteria
2021 Endangered B1ab(iii)
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 g
Distribution

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 3,500 medium
Extent of Occurrence breeding/resident (km2) 3,880
Number of locations 1-5 -
Severely Fragmented -
Population and trend
Value Data quality Derivation Year of estimate
No. of mature individuals 2100-4700 poor estimated 2020
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) 1-9 - - -
Decline (10 years/3 generation past and future) 1-9 - - -
Number of subpopulations 2-100 - - -
Percentage in largest subpopulation 1-89 - - -
Generation length (yrs) 3.8 - - -

Population justification: Based on an estimated range size of 3,500 km2, and a population density of 1-2 individuals/km2, Mills et al. (2011) estimate the population to be 3,500-7,000 total individuals. When the same population density is applied to the calculated AOO of 3880 km2, the total population is calculated to be 3,800-7,700 total individuals. The number of mature individuals therefore is estimated to fall between 2,100 and 4,700.

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). Between 2008-2020, 9% of forest cover was lost across the species's range (Global Forest Watch 2021). Between 2017-2020, 3.08% of forest cover was lost, which equates to 8.5% when projected forward over three generations. As the species occurs in degraded and disturbed forest, (W. R. J. Dean in litt. 2005), the rate of decline is suspected to be <10% over three generations.


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 Low Impact: 4
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 Low Impact: 4
Stresses
Ecosystem degradation, Ecosystem conversion
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: Laniarius brauni. Downloaded from http://www.birdlife.org on 02/12/2022. Recommended citation for factsheets for more than one species: BirdLife International (2022) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 02/12/2022.