Data Zone
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 |
|---|---|---|
| 2021 | Least Concern | |
| 2016 | Near Threatened | C2a(ii) |
| 2012 | Near Threatened | C2a(ii) |
| 2008 | Near Threatened | C2a(ii) |
| 2004 | Near Threatened | |
| 2000 | Lower Risk/Near Threatened | |
| 1994 | Lower Risk/Near Threatened | |
| 1988 | Threatened |
| Migratory status | not a migrant | Forest dependency | medium |
| Land-mass type | Average mass | - |
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence (breeding/resident) | 45,000 km2 | medium |
| Severely fragmented? | no | - |
| Estimate | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| Population size | 30000-200000 mature individuals | poor | estimated | 2020 |
| Population trend | decreasing | poor | suspected | - |
| Generation length | 2.31 years | - | - | - |
| Number of subpopulations | 2-100 | - | - | - |
| Percentage of mature individuals in largest subpopulation | 1-89% | - | - | - |
Population justification: The species is common throughout its range and the population is thought to considerably exceed 50,000 birds (C. Trainor in litt. 2020). On Timor Island particularly, the species may occupy 20% of the overall range amounting to approximately one pair/hectare, which approximately tallies to around 100,000 pairs. It is also common on Semau Island (C. Trainor in litt. 2020). As a preliminary range based on these rough values the population is considered to fall somewhere between 30,000-200,000 mature individuals.
Trend justification: The population is suspected to be undergoing a slow population reduction due to loss of habitat to agriculture and development. However, the species appears to be able to use degraded woodland areas, hence any decline is not thought to approach thresholds for listing as threatened.
| Country/Territory | Presence | Origin | Resident | Breeding visitor | Non-breeding visitor | Passage migrant |
|---|---|---|---|---|---|---|
| Indonesia | extant | native | yes | |||
| Timor-Leste | extant | native | yes |
| Country/Territory | IBA Name |
|---|---|
| Indonesia | Bipolo |
| Indonesia | Buat - Soe |
| Indonesia | Camplong |
| Indonesia | Gunung Mutis |
| Indonesia | Gunung Timau |
| Indonesia | Manipo |
| Indonesia | Oenasi |
| Indonesia | Semau |
| Timor-Leste | Be Malae |
| Timor-Leste | Lore |
| Timor-Leste | Maubara |
| Timor-Leste | Monte Mak Fahik - Sarim |
| Timor-Leste | Mount Paitchau and Lake Iralalaro |
| Timor-Leste | Sungai Klere |
| Timor-Leste | Tasitolu |
| Timor-Leste | Tilomar |
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Artificial/Terrestrial | Subtropical/Tropical Heavily Degraded Former Forest | possible | resident |
| Forest | Subtropical/Tropical Moist Lowland | major | resident |
| Savanna | Dry | marginal | resident |
| Shrubland | Subtropical/Tropical Moist | marginal | resident |
| Altitude | 0 - 1200 m | Occasional altitudinal limits |
| Threat (level 1) | Threat (level 2) | Impact and Stresses | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Agriculture & aquaculture | Wood & pulp plantations - Agro-industry plantations | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Negligible declines | Low Impact: 4 | ||||||
|
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| Biological resource use | Logging & wood harvesting - Unintentional effects: (large scale) [harvest] | Timing | Scope | Severity | Impact | ||||
| Ongoing | Majority (50-90%) | Negligible 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%) | Negligible declines | Low Impact: 4 | ||||||
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Recommended citation
BirdLife International (2024) Species factsheet: White-bellied Bushchat Saxicola gutturalis. Downloaded from
https://datazone.birdlife.org/species/factsheet/white-bellied-bushchat-saxicola-gutturalis 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.