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Brown-cheeked Hornbill Bycanistes cylindricus

IUCN Red List Criteria

Critically Endangered  
Endangered  
Vulnerable A2cd+3cd+4cd 

IUCN Red List history

Year Category
2012 Vulnerable
2008 Near Threatened
2004 Near Threatened
2000 Lower Risk/Near Threatened
1994 Lower Risk/Near Threatened
1988 Lower Risk/Least Concern

Species attributes

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

Distribution

  Estimate Data quality
Extent of Occurrence breeding/resident (km2) 477,000 medium
Number of locations -
Fragmentation -

Population & trend

  Estimate Data quality Derivation Year of estimate
No. of mature individuals Unknown not applicable Not Applicable 0
Population trend Decreasing -
Number of subpopulations - - -
Largest subpopulation - - -
Generation length (yrs) 19 - - -
Population justification: The population size of this species has not been quantified.
Trend justification: The population is suspected to be in rapid decline owing to the destruction and degradation of its habitats and unsustainable hunting pressure.

Country/Territory distribution

Country/Territory Occurrence status Presence Breeding Non-breeding Passage
Côte d'Ivoire Native Extant      
Ghana Native Extant      
Guinea Native Extant      
Liberia Native Extant      
Sierra Leone Native Extant      
Togo Native Extant      

Important Bird Areas where this species has triggered the IBA criteria

Country/Territory IBA Name IBA link
Côte d'Ivoire Azagny National Park site factsheet
Côte d'Ivoire Bossematie Forest Reserve site factsheet
Côte d'Ivoire Comoe National Park site factsheet
Côte d'Ivoire Gueoule and Glo Mountain Forest Reserves site factsheet
Côte d'Ivoire Marahoue National Park site factsheet
Côte d'Ivoire Mopri Forest Reserve site factsheet
Côte d'Ivoire Peko Mountain National Park site factsheet
Côte d'Ivoire Sangbe Mountain National Park site factsheet
Côte d'Ivoire Tai National Park and Nzo Faunal Reserve site factsheet
Côte d'Ivoire Yapo and Mambo Forest Reserves site factsheet
Ghana Ankasa Resource Reserve - Nini-Sushien National Park site factsheet
Ghana Bia National Park and Resource Reserve site factsheet
Ghana Bosomtwe Range Forest Reserve site factsheet
Ghana Draw River Forest Reserve site factsheet
Ghana Kakum National Park - Assin Attandaso Resource Reserve site factsheet
Ghana Nsuensa Forest Reserve site factsheet
Ghana Pra-Sushien Forest Reserve site factsheet
Ghana Subri River Forest Reserve site factsheet
Ghana Tano-Ehuro Forest Reserve site factsheet
Ghana Tano-Nimiri Forest Reserve site factsheet
Guinea Massif du Ziama site factsheet
Liberia Cestos - Senkwen site factsheet
Liberia Grebo site factsheet
Liberia Lofa-Gola-Mano Complex site factsheet
Liberia Nimba mountains (part of Mount Nimba transboundary AZE) site factsheet
Liberia Sapo National Park site factsheet
Liberia Wologizi mountains site factsheet
Liberia Wonegizi mountains site factsheet
Liberia Zwedru site factsheet
Sierra Leone Gola Forest Reserve site factsheet
Sierra Leone Kangari Hills Non-hunting Forest Reserve site factsheet
Sierra Leone Loma Mountains Non-hunting Forest Reserve site factsheet
Uganda Budongo Forest Reserve site factsheet
Uganda Bwindi Impenetrable National Park site factsheet
Uganda Kibale National Park site factsheet
Uganda Queen Elizabeth National Park and Lake George site factsheet
Uganda Semliki National Park site factsheet

Habitats & altitude

Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Terrestrial Plantations marginal resident
Forest Subtropical/Tropical Moist Lowland major resident
Forest Subtropical/Tropical Moist Montane major resident
Altitude 0 - 4054 m Occasional altitudinal limits  

Threats & impact

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 Decline Medium Impact:
Stresses
Ecosystem degradation, Ecosystem conversion
Biological resource use Hunting & trapping terrestrial animals / Intentional use (species is the target) Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Decline Medium Impact:
Stresses
Species mortality
Biological resource use Logging & wood harvesting / Unintentional effects: (large scale) [harvest] Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Decline Medium Impact:
Stresses
Ecosystem degradation, Ecosystem conversion
Biological resource use Logging & wood harvesting / Unintentional effects: (subsistence/small scale) [harvest] Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Decline Medium Impact:
Stresses
Ecosystem degradation

Utilisation

Purpose Primary form used Life stage used Source Scale Level Timing
Food (human) Whole Adults and juveniles Wild Subsistence, National Non-trivial Recent
Pets Whole Adults and juveniles Wild International Non-trivial Recent

Recommended citation
BirdLife International (2014) Species factsheet: Bycanistes cylindricus. Downloaded from http://www.birdlife.org on 24/04/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 24/04/2014.

This information is based upon, and updates, the information published in BirdLife International (2000) Threatened birds of the world. Barcelona and Cambridge, UK: Lynx Edicions and BirdLife International, BirdLife International (2004) Threatened birds of the world 2004 CD-ROM and BirdLife International (2008) Threatened birds of the world 2008 CD-ROM. These sources provide the information for species accounts for the birds on the IUCN Red List.

To provide new information to update this factsheet or to correct any errors, please email BirdLife

To contribute to discussions on the evaluation of the IUCN Red List status of Globally Threatened Birds, please visit BirdLife's Globally Threatened Bird Forums.

Key facts
Current IUCN Red List category Vulnerable
Family Bucerotidae (Hornbills)
Species name author (Temminck, 1824)
Population size Unknown mature individuals
Population trend Decreasing
Distribution size (breeding/resident) 477,000 km2
Country endemic? No
Links to further information
- Summary information on this species
- Climate change species distributions