• 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
-	-	A2c+3c+4c; C2a(i)

Red List history

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

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

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	532,000 km2	medium
Number of locations	11-100	-
Severely fragmented?	yes	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	2500-9999 mature individuals	good	estimated	2000
Population trend	decreasing	poor	suspected	2007-2029
Rate of change over the past 10 years/3 generations (longer of the two periods)	30-49%	-	-	-
Rate of change over the future 10 years/3 generations (longer of the two periods)	30-49%	-	-	-
Rate of change over the past & future 10 years/3 generations (longer of the two periods)	30-49%	-	-	-
Generation length	7.3 years	-	-	-
Number of subpopulations	2-100	-	-	-

Population justification: The total population is estimated at fewer than 10,000 individuals. This figure is supported by estimates for range states provided by various sources. It is placed in the band 2,500-9,999 mature individuals, equating to 3,750-14,999 individuals, rounded here to 3,500-15,000 individuals.

Trend justification: The species's population is suspected to be declining rapidly, in line with forest clearance and degradation across its range.

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

Country/Territory	IBA Name
Côte d'Ivoire	Gueoule and Glo Mountain Forest Reserves
Côte d'Ivoire	Lamto Ecological Research Station
Côte d'Ivoire	Mount Nimba Strict Nature Reserve
Côte d'Ivoire	Parc National de Taï et Réserve de faune du N'Zo
Côte d'Ivoire	Peko Mountain National Park
Côte d'Ivoire	Sangbe Mountain National Park
Guinea	Diécké
Guinea	Kounounkan
Guinea	Massif du Ziama
Guinea	Monts Nimba (part of Mount Nimba transboundary AZE)
Liberia	Lofa-Gola-Mano Complex
Liberia	Nimba mountains
Liberia	Sapo
Liberia	Wologizi mountains
Liberia	Wonegizi mountains
Liberia	Zwedru
Sierra Leone	Gola Forests
Sierra Leone	Kambui Hills Forest Reserve
Sierra Leone	Kangari Hills Non-hunting Forest Reserve
Sierra Leone	Loma Mountains Non-hunting Forest Reserve
Sierra Leone	Tingi Hills Non-hunting Forest Reserve
Sierra Leone	Western Area Peninsula Forest National Park

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Artificial/Terrestrial	Subtropical/Tropical Heavily Degraded Former Forest	suitable	resident
Forest	Subtropical/Tropical Moist Lowland	major	resident
Wetlands (inland)	Permanent Rivers/Streams/Creeks (includes waterfalls)	major	resident
Altitude	0 - 800 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		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		Stresses Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture	Wood & pulp plantations - Small-holder plantations	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		Stresses Ecosystem degradation, Ecosystem conversion
Biological resource use	Hunting & trapping terrestrial animals - Intentional use (species is the target)	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Negligible declines		Low Impact: 4
		Stresses Reduced reproductive success, Species mortality
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
		Ongoing		Minority (<50%)		Negligible declines		Low Impact: 4
		Stresses Ecosystem degradation, Ecosystem conversion
Human intrusions & disturbance	Work & other activities	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Negligible declines		Low Impact: 4
		Stresses Species disturbance, Reduced reproductive success
Invasive and other problematic species, genes & diseases	Problematic native species/diseases	Timing		Scope		Severity		Impact
		Ongoing		Majority (50-90%)		Negligible declines		Low Impact: 5
		Stresses Reduced reproductive success
Natural system modifications	Fire & fire suppression - Increase in fire frequency/intensity	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		Stresses Ecosystem degradation, Ecosystem conversion

Purpose	Scale
Food - human	subsistence, national
Pets/display animals, horticulture	international

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Recommended citation
BirdLife International (2024) Species factsheet: White-necked Rockfowl Picathartes gymnocephalus. Downloaded from https://datazone.birdlife.org/species/factsheet/white-necked-rockfowl-picathartes-gymnocephalus 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.