VU
Bush Blackcap Sylvia nigricapillus



Taxonomy

Taxonomic note

Sylvia nigricapillus (del Hoyo and Collar 2016) was previously listed as Lioptilus nigricapillus.

 

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
- - C2a(i)

Red List history
Year Category Criteria
2017 Vulnerable C2a(i)
2016 Near Threatened C1+2a(i)
2012 Near Threatened C1+2a(i)
2008 Near Threatened C1; C2a(i)
2004 Near Threatened
2000 Lower Risk/Near Threatened
1994 Lower Risk/Near Threatened
1988 Lower Risk/Least Concern
Species attributes

Migratory status altitudinal migrant Forest dependency Medium
Land mass type Land-mass type - continent
Average mass -
Extent of occurrence (EOO)

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 337,000 medium
Number of locations -
Fragmentation -
Population and trend
Estimate Data quality Derivation Year of estimate
No. of mature individuals 1000-3300 medium estimated 2000
Population trend Decreasing inferred -
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 - - -
Largest subpopulations 1-89 - - -
Generation length (yrs) 4.8 - - -

Population justification: The South African population has been estimated at 1,500-5,000 individuals and Swaziland is thought to hold a resident breeding population of 40 individuals. The range of 1,500-5,000 individuals roughly equates to 1,000-3,300 mature individuals; and it is unlikely that any sub-population contains >1,000 mature individuals.

Trend justification:

In the 2015 Eskom Red Data Book of Birds of South Africa, Lesotho and Swaziland (Taylor et al. 2015) it is stated that it has experienced a decline in AOO and potentially population of 30% over the past 15 years based on Southern African Bird Atlas Project (SABAP) data. Other recent literature using SABAP data give range declines of 11% (Cooper 2015) or 6% (Lee et al. 2017), with even a possible core range increase of 11% (Lee et al. 2017). Given this uncertainty the population is inferred to be in decline, but the rate of decline is unknown. These declines are suspected to be a result of ongoing habitat destruction and fragmentation.


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

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Eswatini Malolotja Nature Reserve
South Africa Wolkberg Forest Belt
South Africa Blyde River Canyon
South Africa Mac-Mac Escarpment and Forests
South Africa Kaapsehoop
South Africa Songimvelo Nature Reserve
South Africa Grasslands
South Africa Sterkfontein Dam Nature Reserve
South Africa Golden Gate Highlands National Park
South Africa Maloti Drakensberg Park
South Africa Entumeni Nature Reserve
South Africa Dhlinza Forest Nature Reserve
South Africa KwaZulu-Natal Mistbelt Forests
South Africa Karkloof Nature Reserve
South Africa Impendle Nature Reserve
South Africa Greater Ingwangwana River
South Africa Katberg - Readsdale forest complex
South Africa Amatole Forest Complex

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Terrestrial Arable Land major resident
Artificial/Terrestrial Rural Gardens major non-breeding
Forest Subtropical/Tropical Moist Montane major resident
Forest Temperate major resident
Shrubland Subtropical/Tropical High Altitude suitable resident
Shrubland Temperate suitable resident
Altitude 750 - 1825 m Occasional altitudinal limits  

Threats & impact
Threat (level 1) Threat (level 2) Impact and Stresses
Agriculture & aquaculture Wood & pulp plantations - Agro-industry plantations Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Declines Medium Impact: 6
Stresses
Ecosystem degradation, Ecosystem conversion
Climate change & severe weather Habitat shifting & alteration Timing Scope Severity Impact
Future Whole (>90%) Rapid Declines Medium Impact: 7
Stresses
Indirect ecosystem effects, Ecosystem degradation

Recommended citation
BirdLife International (2020) Species factsheet: Sylvia nigricapillus. Downloaded from http://www.birdlife.org on 13/07/2020. Recommended citation for factsheets for more than one species: BirdLife International (2020) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 13/07/2020.