• 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
-	-	C2a(i)

Red List history

Year	Category	Criteria
2021	Near Threatened	A2c+3c+4c; C2a(i)
2018	Endangered	A2c+3c+4c
2016	Endangered	A2c+3c
2012	Endangered	A2c+3c+4c
2008	Endangered	A2c; A3c; A4c
2004	Endangered
2000	Endangered
1996	Endangered
1994	Endangered
1988	Threatened

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

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	75,300 km2	medium
Area of Occupancy (breeding/resident)	31,380 km2
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	2500-9999 mature individuals	poor	suspected	2020
Population trend	decreasing	medium	inferred	2016-2026
Rate of change over the past 10 years/3 generations (longer of the two periods)	20-29%	-	-	-
Rate of change over the future 10 years/3 generations (longer of the two periods)	20-29%	-	-	-
Rate of change over the past & future 10 years/3 generations (longer of the two periods)	20-29%	-	-	-
Generation length	3.7 years	-	-	-
Number of subpopulations	2-3	-	-	-
Percentage of mature individuals in largest subpopulation	1-89%	-	-	-

Population justification: The population in Liberia's Sapo National Park has recently been estimated at roughly 22,000 individuals, based on density estimates and sightings of 34 individual birds (Freeman et al. 2018). However, extrapolated data for the total population must be treated with caution as the species appears to be very rare and localised in the western part of its range (J. Lindsell in litt. 2007). A survey of Cavalla Forest in 2012 did not find any individuals of this species, despite it being previously described as common in south east Liberia by Gatter & Gardner (1993) (Phalan et al. 2013). Additional surveys in the Gola Forest Landscape, in both Sierra Leone and Liberia in 2013 and 2017, found this species to be patchily distributed,with no obvious reason for this distribution pattern (J. Wardill, S. Wotton and F. Sanderson in litt. 2020). Therefore, the overall population size is tentatively suspected to fall in the band of 2,500-9,999 mature individuals, but further population surveys may alter this figure in future.

Trend justification: The population is inferred to be in decline owing to ongoing habitat destruction and fragmentation (Global Forest Watch, 2021; B. Phalan in litt. 2020).

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

Country/Territory	IBA Name
Côte d'Ivoire	Cavally and Goin - Debe Forest Reserves
Liberia	Cestos - Senkwen
Liberia	Sapo
Liberia	Zwedru
Sierra Leone	Gola Forests

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Subtropical/Tropical Moist Lowland	major	resident
Altitude	0 - 400 m	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		Majority (50-90%)		Slow, Significant Declines		Medium Impact: 6
		Stresses Ecosystem degradation, Ecosystem conversion
Biological resource use	Logging & wood harvesting - Unintentional effects: (large scale) [harvest]	Timing		Scope		Severity		Impact
		Ongoing		Majority (50-90%)		Slow, Significant Declines		Medium Impact: 6
		Stresses Ecosystem degradation, Ecosystem conversion
Energy production & mining	Mining & quarrying	Timing		Scope		Severity		Impact
		Future		Minority (<50%)		Slow, Significant Declines		Low Impact: 3
		Stresses Ecosystem degradation

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Recommended citation
BirdLife International (2024) Species factsheet: Gola Malimbe Malimbus ballmanni. Downloaded from https://datazone.birdlife.org/species/factsheet/gola-malimbe-malimbus-ballmanni on 22/11/2024.
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 22/11/2024.