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Yellow-casqued Hornbill Ceratogymna elata

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) 495,000 medium
Number of locations -
Fragmentation -

Population & trend

  Estimate Data quality Derivation Year of estimate
No. of mature individuals 8000-9000 poor Estimated 2007
Population trend Decreasing medium -
Number of subpopulations - - -
Largest subpopulation - - -
Generation length (yrs) 15.8 - - -
Population justification: Recent calculations put the species's area of suitable habitat at 35,808 km2, and mean population density at 0.35 birds/km2. This gives an estimated population size of 12,533 individuals (H. Rainey in litt. 2007), here rounded to 12,500 individuals. This roughly equates to 8,000-9,000 mature individuals.
Trend justification: Observations on the prevalence of high hunting pressure and habitat loss, and the apparent disappearance of the species from some areas, strongly suggest that it is experiencing a rapid population decline.

Country/Territory distribution

Country/Territory Occurrence status Presence Breeding Non-breeding Passage Resident
Cameroon Native Extant       Yes
Côte d'Ivoire Native Extant       Yes
Ghana Native Extant       Yes
Guinea Native Extant       Yes
Guinea-Bissau Native Extant       Yes
Liberia Native Extant       Yes
Mali Native Extant       Yes
Nigeria Native Extant       Yes
Senegal Native Extant       Yes
Sierra Leone Native Extant       Yes
Togo Native Extant       Yes

Important Bird Areas where this species has triggered the IBA criteria

Country/Territory IBA Name IBA link
Cameroon Bakossi mountains site factsheet
Cameroon Banyang Mbo Wildlife Sanctuary site factsheet
Cameroon Korup National Park site factsheet
Cameroon Mont Nlonako site factsheet
Cameroon Mount Cameroon and Mokoko-Onge site factsheet
Cameroon Mount Rata and Rumpi Hills Forest Reserve site factsheet
Cameroon Yabassi site factsheet
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 Mount Nimba Strict Nature 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
Ghana Ankasa Resource Reserve - Nini-Sushien National Park site factsheet
Ghana Bia National Park and Resource Reserve site factsheet
Ghana Cape Three Points Forest Reserve site factsheet
Ghana Draw River Forest Reserve site factsheet
Ghana Ebi River Shelterbelt Forest Reserve site factsheet
Ghana Fure River Forest Reserve site factsheet
Ghana Kakum National Park - Assin Attandaso Resource Reserve site factsheet
Ghana Pra-Sushien Forest Reserve site factsheet
Ghana Subri River Forest Reserve site factsheet
Guinea Diécké site factsheet
Guinea Kounounkan site factsheet
Guinea Massif du Ziama site factsheet
Guinea-Bissau Cantanhez forests site factsheet
Guinea-Bissau Lagoas de Cufada site factsheet
Guinea-Bissau Rio Tombali, Rio Cumbijã and Ilha de Melo site factsheet
Liberia Cestos - Senkwen site factsheet
Liberia Grebo site factsheet
Liberia Lofa-Gola-Mano Complex site factsheet
Liberia Nimba mountains site factsheet
Liberia Sapo National Park site factsheet
Liberia Wologizi mountains site factsheet
Liberia Wonegizi mountains site factsheet
Liberia Zwedru site factsheet
Nigeria Afi River Forest Reserve site factsheet
Nigeria Cross River National Park: Oban Division site factsheet
Nigeria Okomu National Park site factsheet
Nigeria Omo Forest Reserve site factsheet
Nigeria Pandam Wildlife Park site factsheet
Senegal Parc National de Basse Casamance site factsheet
Sierra Leone Gola Forest Reserve site factsheet
Sierra Leone Kambui Hills Forest Reserve site factsheet
Sierra Leone Kangari Hills Non-hunting Forest Reserve site factsheet
Sierra Leone Loma Mountains Non-hunting Forest Reserve site factsheet
Sierra Leone Outamba-Kilimi National Park site factsheet
Sierra Leone Tingi Hills Non-hunting Forest Reserve site factsheet
Sierra Leone Western Area Peninsula Non-hunting Forest Reserve site factsheet
Togo Fazao-Malfakassa National Park site factsheet

Habitats & altitude

Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Terrestrial Plantations suitable resident
Forest Subtropical/Tropical Moist Lowland major resident
Altitude 0 - 1000 m Occasional altitudinal limits  

Threats & impact

Threat (level 1) Threat (level 2) Impact and Stresses
Agriculture & aquaculture Annual & perennial non-timber crops / Agro-industry farming Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Decline Low Impact: 5
Stresses
Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture Annual & perennial non-timber crops / Shifting agriculture Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Decline Medium Impact: 6
Stresses
Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture Annual & perennial non-timber crops / Small-holder farming Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Decline Medium Impact: 6
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: 6
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: 6
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: 6
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: Ceratogymna elata. Downloaded from http://www.birdlife.org on 29/08/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 29/08/2014.

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, 1831)
Population size 8000-9000 mature individuals
Population trend Decreasing
Distribution size (breeding/resident) 495,000 km2
Country endemic? No
Links to further information
- Summary information on this species
- Projected distributions under climate change