Data Zone
Taxonomic note
Horornis carolinae (del Hoyo and Collar 2016) was previously listed as Cettia carolinae.
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 |
|---|---|---|
| 2019 | Near Threatened | B1ab(ii,iii)+2ab(ii,iii) |
| 2016 | Near Threatened | B1ab(iii) |
| 2012 | Near Threatened | B1ab(iii) |
| 2008 | Near Threatened | B1a+b(iii) |
| 2004 | Near Threatened | |
| 2000 | Lower Risk/Near Threatened | |
| 1994 | Lower Risk/Near Threatened | |
| 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) | 4,000 km2 | medium |
| Number of locations | 11-100 | - |
| Severely fragmented? | no | - |
| Estimate | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| Population size | unknown | - | - | - |
| Population trend | decreasing | poor | inferred | 1998-2008 |
| Rate of change over the past 10 years/3 generations (longer of the two periods) | 1-9% | - | - | - |
| Rate of change over the future 10 years/3 generations (longer of the two periods) | 1-9% | - | - | - |
| Rate of change over the past & future 10 years/3 generations (longer of the two periods) | 1-9% | - | - | - |
| Generation length | 3.7 years | - | - | - |
Population justification: The global population size has not been quantified. The species is described as common in suitable habitat.
Trend justification: Data on trends are lacking, and populations are unlikely to have been affected greatly by habitat change as this species is tolerant of secondary habitats. However, extensive logging in some parts of Yamenda suggest that small declines may have occurred. A remote sensing study found a rate of forest loss of 2.5% over 10 years within the species's range (Tracewski et al. 2016).
| Country/Territory | Presence | Origin | Resident | Breeding visitor | Non-breeding visitor | Passage migrant |
|---|---|---|---|---|---|---|
| Indonesia | extant | native | yes |
| Country/Territory | IBA Name |
|---|---|
| Indonesia | Tanimbar Tengah |
| 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 |
| Shrubland | Subtropical/Tropical Dry | suitable | resident |
| Altitude | 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 | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
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| Biological resource use | Logging & wood harvesting - Unintentional effects: (subsistence/small scale) [harvest] | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
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Recommended citation
BirdLife International (2024) Species factsheet: Tanimbar Bush-warbler Horornis carolinae. Downloaded from
https://datazone.birdlife.org/species/factsheet/tanimbar-bush-warbler-horornis-carolinae on 22/11/2024.
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 22/11/2024.