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closeIUCN Red List Criteria
| Critically Endangered | |
| Endangered | |
| Vulnerable | A2c+3c+4c |
IUCN Red List history
| Year | Category |
|---|---|
| 2012 | Vulnerable |
| 2008 | Vulnerable |
| 2004 | Vulnerable |
| 2000 | Vulnerable |
| 1996 | Vulnerable |
| 1994 | Vulnerable |
| 1988 | Threatened |
Species attributes
| Migratory status | not a migrant | Forest dependency | Medium |
| Land mass type | continent |
Average mass | 28.1 g |
Distribution
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence breeding/resident (km2) | 231,000 | medium |
| Number of locations | 11-100 | - |
| Fragmentation | - |
Population & trend
| Estimate | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| No. of mature individuals | poor | Suspected | 2007 | |
| Population trend | Decreasing | medium | - | |
| Number of subpopulations | 2-100 | - | - | - |
| Largest subpopulation | - | - | - | |
| Generation length (yrs) | 3.5 | - | - | - |
| Population justification: The total population is conservatively suspected to number somewhere in the region of 100,000-499,999 individuals based on a population of c.120,000 pairs in Liberia alone. | ||||
| Trend justification: The population is suspected to be declining rapidly, in line with the clearance of forest within the species's range for commercial timber extraction and agriculture. | ||||
Country/Territory distribution
| Country/Territory | Occurrence status | Extinct | Breeding | Non-breeding | Passage |
|---|---|---|---|---|---|
| Côte d'Ivoire | Native | No | |||
| Ghana | Native | No | |||
| Guinea | Native | No | |||
| Liberia | Native | No | |||
| Sierra Leone | Native | No |
Important Bird Areas where this species has triggered the IBA criteria
| Country/Territory | IBA Name | IBA link |
|---|---|---|
| Côte d'Ivoire | Mabi Forest reserve |  |
| Côte d'Ivoire | Mopri Forest Reserve | |
| Côte d'Ivoire | Mount Nimba Strict Nature Reserve | |
| Côte d'Ivoire | Tai National Park and Nzo Faunal Reserve | |
| Côte d'Ivoire | Yapo and Mambo Forest Reserves | |
| Ghana | Ankasa Resource Reserve - Nini-Sushien National Park | |
| Ghana | Atewa Range Forest Reserve | |
| Ghana | Bia National Park and Resource Reserve | |
| Ghana | Boin River Forest Reserve | |
| Ghana | Boin Tano 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 | Subri River Forest Reserve | |
| Ghana | Tano-Anwia Forest Reserve | |
| Ghana | Tano-Ehuro Forest Reserve | |
| Ghana | Tano-Nimiri Forest Reserve | |
| Ghana | Tano-Offin Forest Reserve | |
| Guinea | Diécké | |
| Guinea | Massif du Ziama | |
| Liberia | Cestos - Senkwen | |
| Liberia | Grebo | |
| Liberia | Lofa-Gola-Mano Complex | |
| Liberia | Nimba mountains (part of Mount Nimba transboundary AZE) | |
| Liberia | Sapo National Park | |
| Liberia | Wologizi mountains | |
| Liberia | Wonegizi mountains | |
| Liberia | Zwedru | |
| Sierra Leone | Gola Forest Reserve | |
| Sierra Leone | Loma Mountains Non-hunting Forest Reserve | |
Habitats & altitude
| 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 |
| Altitude | 0 - 800 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%) | Rapid Declines | Medium Impact: | ||||||
| |||||||||
| Biological resource use | Fishing & harvesting aquatic resources / Unintentional effects: (subsistence/small scale) | Timing | Scope | Severity | Impact | ||||
| Ongoing | Majority (50-90%) | Rapid Declines | Medium Impact: | ||||||
| |||||||||
| Biological resource use | Logging & wood harvesting / Intentional use: (large scale) | Timing | Scope | Severity | Impact | ||||
| Ongoing | Majority (50-90%) | Rapid Declines | Medium Impact: | ||||||
| |||||||||
Recommended citation
BirdLife International (2013) Species factsheet: Criniger olivaceus. Downloaded from
http://www.birdlife.org on 24/05/2013.
Recommended citation for factsheets for more than one species: BirdLife International (2013) IUCN Red List for birds. Downloaded from
http://www.birdlife.org on 24/05/2013.
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 | Pycnonotidae (Bulbuls) |
| Species name author | (Swainson, 1837) |
| Population size | mature individuals |
| Population trend | Decreasing |
| Distribution size (breeding/resident) | 231,000 km2 |
| Country endemic? | No |
| Links to further information | |
|
- Summary information on this species - Climate change species distributions | |
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