Ruwenzori Hill-babbler (Sylvia atriceps) - BirdLife species factsheet

Ruwenzori Hill-babbler Sylvia atriceps

Current view: Data table and detailed info

Taxonomy

Taxonomic note
Sylvia abyssinica and S. atriceps (del Hoyo and Collar 2016) were previously lumped as Pseudoalcippe abyssinica following Dowsett & Forbes-Watson (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	Least Concern

Species attributes

Migratory status	not a migrant	Forest dependency	high
Land mass type		Average mass	19 g

Distribution

	Estimate	Data quality
Extent of Occurrence breeding/resident (km2)	1,470,000
Number of locations		-
Severely Fragmented		-

Population and trend

	Value	Data quality	Derivation	Year of estimate
No. of mature individuals	unknown	not applicable	not applicable	0
Population trend	decreasing		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)	5.6	-	-	-

Population justification: The global population size has not been quantified, but the species is described as common (del Hoyo et al. 2007).

Trend justification: The population is suspected to be in decline owing to ongoing habitat destruction and fragmentation (del Hoyo et al. 2007).

Country/territory distribution

Country/Territory	Presence	Origin	Resident
Cameroon	extant	native	yes
Congo, The Democratic Republic of the	extant	native	yes
Nigeria	extant	native	yes
Rwanda	extant	native	yes
Uganda	extant	native	yes

Important Bird and Biodiversity Areas (IBA)

Country/Territory	IBA Name

Habitats & altitude

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Artificial/Terrestrial	Plantations	suitable	resident
Forest	Subtropical/Tropical Dry	suitable	resident
Forest	Subtropical/Tropical Moist Montane	major	resident
Shrubland	Subtropical/Tropical Moist	suitable	resident
Altitude	900 - 3000 m	Occasional altitudinal limits

Recommended citation
BirdLife International (2023) Species factsheet: Sylvia atriceps. Downloaded from http://datazone.birdlife.org/species/factsheet/ruwenzori-hill-babbler-sylvia-atriceps on 06/06/2023. Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from http://datazone.birdlife.org on 06/06/2023.