Data Zone
Taxonomic source(s)
Chappuis, C. and Erard, C. 1993. Species limits in the genus Bleda Bonaparte, 1857 (Aves: Pycnonotidae). Zeitschrift fuer Zoologische Systematik und Evolutionsforschung 31: 280-299.
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.
| Critically Endangered | Endangered | Vulnerable |
|---|---|---|
| - | - | - |
| Year | Category | Criteria |
|---|---|---|
| 2018 | Near Threatened | A2c+3c+4c |
| 2016 | Near Threatened | A2c+3c |
| 2012 | Near Threatened | A2c+3c+4c |
| 2008 | Vulnerable | A2c; A3c; A4c |
| 2004 | Vulnerable | |
| 2000 | Vulnerable | |
| 1996 | Vulnerable | |
| 1994 | Vulnerable | |
| 1988 | Not Recognised |
| Migratory status | not a migrant | Forest dependency | high |
| Land-mass type |
continent |
Average mass | - |
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence (breeding/resident) | 422,000 km2 | medium |
| Number of locations | 11-100 | - |
| Severely fragmented? | no | - |
| Estimate | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| Population size | 10000-19999 mature individuals | poor | estimated | 2000 |
| Population trend | decreasing | medium | inferred | 2012-2023 |
| Rate of change over the past 10 years/3 generations (longer of the two periods) | 20-29% | - | - | - |
| Rate of change over the future 10 years/3 generations (longer of the two periods) | 20-29% | - | - | - |
| Rate of change over the past & future 10 years/3 generations (longer of the two periods) | 20-29% | - | - | - |
| Generation length | 3.5 years | - | - | - |
| Number of subpopulations | 2-100 | - | - | - |
Population justification: The population size is preliminarily estimated to fall into the band 10,000-19,999 mature individuals.
Trend justification: The population is suspected to be in moderately rapid decline, owing to the clearance of forest in the species's range primarily for commercial timber extraction and subsistence agriculture. The rate of decline is not thought to be more severe because the species shows some tolerance of modified habitats.
| Country/Territory | Presence | Origin | Resident | Breeding visitor | Non-breeding visitor | Passage migrant |
|---|---|---|---|---|---|---|
| Côte d'Ivoire | extant | native | yes | |||
| Ghana | extant | native | yes | |||
| Guinea | extant | native | yes | |||
| Liberia | extant | native | yes | |||
| Sierra Leone | extant | native | yes |
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Forest | Subtropical/Tropical Moist Lowland | major | resident |
| Forest | Subtropical/Tropical Moist Montane | suitable | resident |
| Altitude | 0 - 1400 m | Occasional altitudinal limits |
| 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: 7 | ||||||
|
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| Biological resource use | Logging & wood harvesting - Unintentional effects: (large scale) [harvest] | Timing | Scope | Severity | Impact | ||||
| Ongoing | Majority (50-90%) | Rapid Declines | Medium Impact: 7 | ||||||
|
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| Residential & commercial development | Commercial & industrial areas | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
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| Residential & commercial development | Housing & urban areas | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
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Recommended citation
BirdLife International (2023) Species factsheet: Bleda eximius. Downloaded from
http://datazone.birdlife.org/species/factsheet/green-tailed-bristlebill-bleda-eximius on 03/12/2023.
Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from
http://datazone.birdlife.org on 03/12/2023.
