Data Zone
Taxonomic note
Chamaetylas poliocephala (del Hoyo and Collar 2016) was previously listed as Pseudalethe poliocephala.
Taxonomic source(s)
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 | Least Concern | |
| 2016 | Least Concern | |
| 2012 | Least Concern | |
| 2009 | Least Concern | |
| 2008 | Least Concern | |
| 2004 | Least Concern | |
| 2000 | Lower Risk/Least Concern | |
| 1994 | Lower Risk/Least Concern | |
| 1988 | Lower Risk/Least Concern |
| Migratory status | not a migrant | Forest dependency | medium |
| Land-mass type | Average mass | 28 g |
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence (breeding/resident) | 7,590,000 km2 | medium |
| Severely fragmented? | no | - |
| Estimate | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| Population size | unknown | - | - | - |
| Population trend | decreasing | - | suspected | - |
| Generation length | 6.5 years | - | - | - |
Population justification: The global population size has not been quantified, but the species is reported to be abundant in parts of its range (Keith et al. 1992).
Trend justification: The population is suspected to be in decline owing to ongoing habitat destruction and predation by introduced species.
| Country/Territory | Presence | Origin | Resident | Breeding visitor | Non-breeding visitor | Passage migrant |
|---|---|---|---|---|---|---|
| Angola | extant | native | yes | |||
| Burundi | extant | native | yes | |||
| Cameroon | extant | native | yes | |||
| Central African Republic | 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 | |||
| Kenya | extant | native | yes | |||
| Liberia | extant | native | yes | |||
| Nigeria | extant | native | yes | |||
| Rwanda | extant | native | yes | |||
| Sierra Leone | extant | native | yes | |||
| South Sudan | extant | native | yes | |||
| Sudan | extant | native | yes | |||
| Tanzania | extant | native | yes | |||
| Uganda | extant | native | yes |
| Country/Territory | IBA Name |
|---|
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Forest | Subtropical/Tropical Moist Lowland | major | resident |
| Forest | Subtropical/Tropical Moist Montane | suitable | resident |
| Forest | Subtropical/Tropical Swamp | suitable | resident |
| Altitude | Occasional altitudinal limits |
Recommended citation
BirdLife International (2024) Species factsheet: Brown-chested Alethe Chamaetylas poliocephala. Downloaded from
https://datazone.birdlife.org/species/factsheet/brown-chested-alethe-chamaetylas-poliocephala on 26/12/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from
https://datazone.birdlife.org/species/search on 26/12/2024.