Data Zone
Taxonomic note
Cyornis olivaceus (del Hoyo and Collar 2016) was previously listed as Rhinomyias olivaceus.
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.
Sibley, C. G.; Monroe, B. L. 1990. Distribution and taxonomy of birds of the world. Yale University Press, New Haven, USA.
| Critically Endangered | Endangered | Vulnerable |
|---|---|---|
| - | - | - |
| Year | Category | Criteria |
|---|---|---|
| 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 | - |
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence breeding/resident (km2) | 4,130,000 | |
| Number of locations | - | |
| Severely Fragmented | - |
| Value | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| No. of mature individuals | unknown | not applicable | not applicable | 0 |
| Population trend | Decreasing | suspected | - | |
| Decline (3 years/1 generation past) | - | - | - | |
| Decline (5 years/1 generation past) | - | - | - | |
| Decline (10 years/1 generation past) | - | - | - | |
| Decline (10 years/3 generation future) | - | - | - | |
| Decline (10 years/3 generation past and future) | - | - | - | |
| Number of subpopulations | - | - | - | |
| Percentage in largest subpopulation | - | - | - | |
| Generation length (yrs) | 3.8 | - | - | - |
Population justification: The population size is unknown, but the species is described as generally uncommon although common on Peninsular Malaysia (del Hoyo et al. 2006).
Trend justification: The population is suspected to be in decline owing to ongoing habitat destruction.
| Country/Territory | Occurrence status | Presence | Resident | Breeding | Non-breeding | Passage |
|---|---|---|---|---|---|---|
| Brunei | N | Extant | Yes | |||
| China (mainland) | N | Extant | Yes | |||
| Indonesia | N | Extant | Yes | |||
| Malaysia | N | Extant | Yes | |||
| Myanmar | N | Extant | Yes | |||
| Thailand | N | Extant | Yes |
| Country/Territory | IBA Name |
|---|---|
| Malaysia | Mount Kinabalu |
| Malaysia | Tabin Wildlife Reserve |
| Malaysia | Kabili-Sepilok |
| Malaysia | Lanjak Entimau Wildlife Sanctuary |
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Artificial/Terrestrial | Plantations | suitable | resident |
| Forest | Subtropical/Tropical Moist Lowland | major | resident |
| Altitude | 0 - 900 m | Occasional altitudinal limits | (max) 1200 m |
Recommended citation
BirdLife International (2023) Species factsheet: Cyornis olivaceus. Downloaded from
http://www.birdlife.org on 30/03/2023.
Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from
http://www.birdlife.org on 30/03/2023.
