• Summary
• Text account
• Data table and detailed info
• Distribution map
• Climate Change maps
• Reference and further resources

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.

Red List criteria met

Critically Endangered	Endangered	Vulnerable
-	-	-

Red List history

Year	Category	Criteria
2018	Data Deficient
2016	Near Threatened	A2c+3c+4c
2012	Near Threatened	A2c+3c+4c
2008	Near Threatened	A2c; A3c; A4c
2004	Near Threatened
2000	Lower Risk/Near Threatened
1996	Vulnerable
1994	Vulnerable
1988	Near Threatened

Migratory status	not a migrant	Forest dependency	medium
Land-mass type	continent	Average mass	-

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	154,000 km2	medium
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	unknown	-	-	-
Population trend	decreasing	-	suspected	2011-2021
Generation length	3.1 years	-	-	-
Percentage of mature individuals in largest subpopulation	100%	-	-	-

Population justification: The global population size has not been quantified, but the species is described as locally common (del Hoyo et al. 2006). Gatter (1997) estimated that Liberia could contain 60,000 pairs, but given the recent evidence of the loss of occupied habitat, and its disappearance from areas where it had been thought to be locally common, it is likely that the global population size is much smaller than this, or the previous estimates from Gatter (1997) had been too high. In effect the population size is essentially unknown.

Trend justification: The population is suspected to be declining owing to ongoing habitat destruction. Tracewski et al. (2016) estimated the rate of forest loss within the species's range at c.0.5% per year between 2000 and 2012, which would roughly equate to c.4.9% over 10 years. However, this included large areas where the species is not known to occur. Phalan et al. (2013) failed to locate the species at all during surveys of Grand Gedeh County, even when using playback, despite Gatter (1997) saying that there could be as many as 4 males per 200m at Zwedru. Therefore, while it is likely appropriate to consider this species to be in decline, it is not possible to quantify the rate of decline, and it could fall anywhere between a slow decline and potentially an extremely rapid one.

Country/Territory	Presence	Origin	Resident	Breeding visitor	Non-breeding visitor	Passage migrant
Côte d'Ivoire	extant	native	yes
Ghana	possibly extinct	native	yes
Guinea	extant	native	yes
Liberia	extant	native	yes
Sierra Leone	extant	native	yes

Country/Territory	IBA Name
Côte d'Ivoire	Lamto Ecological Research Station
Côte d'Ivoire	Marahoue National Park
Côte d'Ivoire	Mount Nimba Strict Nature Reserve
Côte d'Ivoire	Parc National de Taï et Réserve de faune du N'Zo
Guinea	Massif du Ziama
Liberia	Grebo
Liberia	Nimba mountains
Liberia	Sapo
Liberia	Wologizi mountains
Liberia	Wonegizi mountains
Liberia	Zwedru
Sierra Leone	Kangari Hills Non-hunting Forest Reserve
Sierra Leone	Tingi Hills Non-hunting Forest Reserve

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Subtropical/Tropical Moist Lowland	suitable	resident
Forest	Subtropical/Tropical Moist Montane	major	resident
Forest	Subtropical/Tropical Swamp	major	resident
Altitude		Occasional altitudinal limits

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%)		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		Minority (<50%)		Negligible declines		Low Impact: 4
		Stresses Ecosystem degradation, Ecosystem conversion
Energy production & mining	Mining & quarrying	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Rapid Declines		Medium Impact: 6
		Stresses Ecosystem degradation, Ecosystem conversion

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Recommended citation
BirdLife International (2024) Species factsheet: Black-headed Rufous-warbler Bathmocercus cerviniventris. Downloaded from https://datazone.birdlife.org/species/factsheet/black-headed-rufous-warbler-bathmocercus-cerviniventris on 23/12/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from https://datazone.birdlife.org/species/search on 23/12/2024.