VU
Grey-necked Rockfowl Picathartes oreas



Taxonomy

Taxonomic note

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.
Dowsett, R. J.; Forbes-Watson, A. D. 1993. Checklist of birds of the Afrotropical and Malagasy regions. Tauraco Press, Li
Sibley, C. G.; Monroe, B. L. 1990. Distribution and taxonomy of birds of the world. Yale University Press, New Haven, USA.

IUCN Red list criteria met and history
Red List criteria met
Critically Endangered Endangered Vulnerable
- - C2a(i)

Red List history
Year Category Criteria
2016 Vulnerable C2a(i)
2013 Vulnerable C2a(i)
2012 Vulnerable C2a(i)
2008 Vulnerable C2a(i)
2004 Vulnerable
2000 Vulnerable
1996 Vulnerable
1994 Vulnerable
1988 Threatened
Species attributes

Migratory status not a migrant Forest dependency High
Land mass type Land-mass type - continent
Average mass -
Extent of occurrence (EOO)

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 522,000 medium
Number of locations 11-100 -
Fragmentation -
Population and trend
Estimate Data quality Derivation Year of estimate
No. of mature individuals 2500-9999 medium estimated 2000
Population trend Decreasing medium 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 2-100 - - -
Largest subpopulations - - -
Generation length (yrs) 7.3 - - -

Population justification: The total population is almost certainly less than 10,000 mature individuals (C. Bowden in litt. 1999, R. Fotso in litt. 1999, H. Thompson in litt. 2000), and it is thus placed in the band 2,500-9,999 mature individuals. This equates to 3,750-14,999 individuals in total, rounded here to 3,500-15,000 individuals.

Trend justification: It has been stated that the species's population is believed to be either stable or declining (Bian et al. 2006). Population estimates from Nigeria suggest a large decline, though this may be over-inflated because early population estimates may have been too high (Atuo et al. 2016). However, given levels of habitat loss and degradation, hunting and disturbance, the population is suspected to be in decline.


Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Cameroon N Extant Yes
Central African Republic N Extant Yes
Congo N Extant Yes
Equatorial Guinea N Extant Yes
Gabon N Extant Yes
Nigeria N Extant Yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Cameroon Bakossi mountains
Cameroon Banyang Mbo Wildlife Sanctuary
Cameroon Boumba - Bek
Cameroon Campo Ma'an complex
Cameroon Dja Faunal Reserve
Cameroon Korup National Park
Cameroon Mbam Minkom - Kala
Cameroon Mont Manengouba
Cameroon Mont Nlonako
Cameroon Mount Cameroon and Mokoko-Onge
Cameroon Mount Kupe
Cameroon Mount Rata and Rumpi Hills Forest Reserve
Cameroon Yabassi
Equatorial Guinea Luba Caldera Scientific Reserve
Equatorial Guinea Monte Alen National Park
Equatorial Guinea Nsork Highlands National Park
Gabon Gamba Protected Areas Complex
Gabon Lopé Faunal Reserve
Nigeria Afi River Forest Reserve
Nigeria Cross River National Park (Oban Division)
Nigeria Cross River National Park (Okwangwo Division) and Mbe Mountains
Nigeria Ebok-Kabaken

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Forest Subtropical/Tropical Moist Lowland major resident
Forest Subtropical/Tropical Moist Montane major resident
Wetlands (inland) Permanent Rivers/Streams/Creeks (includes waterfalls) major resident
Altitude 45 - 2100 m Occasional altitudinal limits  

Threats & impact
Threat (level 1) Threat (level 2) Impact and Stresses
Agriculture & aquaculture Annual & perennial non-timber crops Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Declines
Stresses
Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture Annual & perennial non-timber crops Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Declines
Stresses
Ecosystem degradation, Ecosystem conversion
Biological resource use Hunting & trapping terrestrial animals Timing Scope Severity Impact
Ongoing Minority (<50%) Negligible declines
Stresses
Species disturbance, Species mortality
Biological resource use Hunting & trapping terrestrial animals Timing Scope Severity Impact
Ongoing Minority (<50%) Negligible declines
Stresses
Species disturbance, Species mortality
Biological resource use Logging & wood harvesting Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Declines
Stresses
Ecosystem degradation, Ecosystem conversion
Human intrusions & disturbance Recreational activities Timing Scope Severity Impact
Ongoing Minority (<50%) Negligible declines
Stresses
Species disturbance
Human intrusions & disturbance Work & other activities Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Declines
Stresses
Species disturbance
Invasive and other problematic species, genes & diseases Problematic native species/diseases Timing Scope Severity Impact
Ongoing Minority (<50%) Unknown
Stresses
Reduced reproductive success

Utilisation
Purpose Primary form used Life stage used Source Scale Level Timing
Pets/display animals, horticulture - - - Non-trivial Recent
Pets/display animals, horticulture - - - International Non-trivial Recent

Recommended citation
BirdLife International (2017) Species factsheet: Picathartes oreas. Downloaded from http://www.birdlife.org on 18/12/2017. Recommended citation for factsheets for more than one species: BirdLife International (2017) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 18/12/2017.