LC
Naked-faced Barbet Gymnobucco calvus



Taxonomy

Taxonomic note

Gymnobucco calvus and G. vernayi (del Hoyo and Collar 2014) were previously lumped as G. calvus following Sibley and Monroe (1990, 1993).

Taxonomic source(s)
del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A. and Fishpool, L.D.C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Lynx Edicions BirdLife International, Barcelona, Spain and Cambridge, UK.
del Hoyo, J.; Collar, N. J.; Christie, D. A.; Elliott, A.; Fishpool, L. D. C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Barcelona, Spain and Cambridge UK: Lynx Edicions and BirdLife International.

IUCN Red List criteria met and history
Red List criteria met
Critically Endangered Endangered Vulnerable
- - -

Red List history
Year Category Criteria
2016 Least Concern
2014 Least Concern
Species attributes

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

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 3,430,000 medium
Severely fragmented? no -
Population and trend
Value Data quality Derivation Year of estimate
Number of mature individuals unknown not applicable not applicable 0
Population trend decreasing suspected -
Generation length (years) 8.5 - - -

Population justification: The global population size has not been quantified, but the species is reported to be generally common throughout its range (del Hoyo et al. 2002).

Trend justification: The population is suspected to be in decline owing to loss of suitable nesting and roosting trees (del Hoyo et al. 2002).


Country/territory distribution
Country/Territory Presence Origin Resident Breeding Non-breeding Passage
Angola extant native yes
Benin extant native yes
Cameroon extant native yes
Congo extant native yes
Congo, The Democratic Republic of the extant native yes
Côte d'Ivoire extant native yes
Equatorial Guinea extant native yes
Gabon extant native yes
Ghana extant native yes
Guinea extant native yes
Liberia extant native yes
Nigeria extant native yes
Sierra Leone extant native yes
Togo extant native yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Angola Camabatela
Angola Maiombe
Congo, The Democratic Republic of the Luki Forest Reserve
Congo Odzala National Park complex
Congo Dimonika Biosphere Reserve
Congo Lower Kouilou basin
Congo Conkouati National Park
Côte d'Ivoire Mount Nimba Strict Nature Reserve
Côte d'Ivoire Gueoule and Glo Mountain Forest Reserves
Côte d'Ivoire Peko Mountain National Park
Côte d'Ivoire Marahoue National Park
Côte d'Ivoire Bossematie Forest Reserve
Côte d'Ivoire Lamto Ecological Research Station
Côte d'Ivoire Parc National de Taï et Réserve de faune du N'Zo
Côte d'Ivoire Mopri Forest Reserve
Côte d'Ivoire Yapo and Mambo Forest Reserves
Côte d'Ivoire Azagny National Park
Cameroon Banyang Mbo Wildlife Sanctuary
Cameroon Korup National Park
Cameroon Mont Manengouba
Cameroon Bakossi mountains
Cameroon Mont Nlonako
Cameroon Mount Rata and Rumpi Hills Forest Reserve
Cameroon Mount Kupe
Cameroon Yabassi
Cameroon Mount Cameroon and Mokoko-Onge
Cameroon Dja Faunal Reserve
Gabon Gamba Protected Areas Complex
Gabon Lopé Faunal Reserve
Gabon Ipassa Strict Nature Reserve
Gabon Léconi grasslands
Ghana Ankasa Resource Reserve - Nini-Sushien National Park
Ghana Atewa Range Forest Reserve
Ghana Bia National Park and Resource Reserve
Ghana Boin Tano Forest Reserve
Ghana Boin River Forest Reserve
Ghana Bosomtwe Range Forest Reserve
Ghana Bura River Forest Reserve
Ghana Cape Three Points Forest Reserve
Ghana Dadieso Forest Reserve
Ghana Draw River Forest Reserve
Ghana Ebi River Shelterbelt Forest Reserve
Ghana Fure River Forest Reserve
Ghana Jema-Asemkrom Forest Reserve
Ghana Kakum National Park - Assin Attandaso Resource Reserve
Ghana Mamiri Forest Reserve
Ghana Mount Afadjato - Agumatsa Range forest
Ghana Nsuensa Forest Reserve
Ghana Pra-Sushien Forest Reserve
Ghana Subri River Forest Reserve
Ghana Tano-Anwia Forest Reserve
Ghana Tano-Ehuro Forest Reserve
Ghana Tano-Nimiri Forest Reserve
Ghana Tano-Offin Forest Reserve
Ghana Yoyo River Forest Reserve
Guinea Kounounkan
Guinea Massif du Ziama
Guinea Monts Nimba (part of Mount Nimba transboundary AZE)
Guinea Diécké
Equatorial Guinea Monte Alen National Park
Liberia Wologizi mountains
Liberia Wonegizi mountains
Liberia Lofa-Gola-Mano Complex
Liberia Nimba mountains
Liberia Zwedru
Liberia Cestos - Senkwen
Liberia Sapo
Liberia Grebo
Nigeria Gashaka-Gumti National Park
Nigeria Afi River Forest Reserve
Nigeria Okomu National Park
Nigeria Cross River National Park (Oban Division)
Nigeria Omo Forest Reserve
Nigeria Cross River National Park (Okwangwo Division) and Mbe Mountains
Nigeria IITA Forest Reserve, Ibadan
Nigeria Donga river basin forests
Nigeria Upper Orashi forests
Nigeria Biseni forests
Nigeria Akassa forests
Nigeria Ebok-Kabaken
Sierra Leone Loma Mountains Non-hunting Forest Reserve
Sierra Leone Tingi Hills Non-hunting Forest Reserve
Sierra Leone Western Area Peninsula Forest National Park
Sierra Leone Kambui Hills Forest Reserve
Sierra Leone Gola Forests
Togo Misahöhe Forest Reserve
Congo Lake Télé Community Reserve

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Terrestrial Plantations suitable resident
Artificial/Terrestrial Rural Gardens suitable resident
Forest Subtropical/Tropical Moist Lowland major resident
Forest Subtropical/Tropical Moist Montane suitable resident
Savanna Dry suitable resident
Altitude 0 - 1820 m Occasional altitudinal limits  

Utilisation
Purpose Primary form used Life stage used Source Scale Level Timing
Pets/display animals, horticulture - - - international non-trivial recent

Recommended citation
BirdLife International (2023) Species factsheet: Gymnobucco calvus. Downloaded from http://datazone.birdlife.org/species/factsheet/naked-faced-barbet-gymnobucco-calvus on 26/09/2023. Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from http://datazone.birdlife.org on 26/09/2023.