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 |
|---|---|---|
| 2024 | 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 | - |
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence (breeding/resident) | 81,700 km2 | |
| Severely fragmented? | no | - |
| Estimate | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| Population size | unknown | - | - | - |
| Population trend | decreasing | - | suspected | - |
| Generation length | 3 years | - | - | - |
Population justification: The global population size has not been quantified, but the species is reported to be widespread and common in most of its range (Coates et al. 1997). This species is considered to have a medium dependency on forest habitat, and tree cover is estimated to have declined by 3.6% within its mapped range over the past 10 years (Global Forest Watch 2022, using Hansen et al. [2013] data and methods disclosed therein). Therefore, as a precautionary measure, it is tentatively suspected that this loss of cover may have led to a decline of between 1-19% in the species' population size over the same time frame.
Trend justification: .
| 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 | Kateri - Maubesi |
| Indonesia | Manipo |
| Indonesia | Oenasi |
| Timor-Leste | Areia Branca no Dolok Oan |
| Timor-Leste | Atauro Island |
| Timor-Leste | Be Malae |
| Timor-Leste | Fatumasin |
| Timor-Leste | Irabere - Iliomar |
| Timor-Leste | Lore |
| Timor-Leste | Maubara |
| Timor-Leste | Monte Diatuto |
| Timor-Leste | Monte Mak Fahik - Sarim |
| Timor-Leste | Monte Tatamailau |
| Timor-Leste | Mount Paitchau and Lake Iralalaro |
| Timor-Leste | Subaun |
| Timor-Leste | Sungai Klere |
| Timor-Leste | Tasitolu |
| Timor-Leste | Tilomar |
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Artificial/Terrestrial | Plantations | suitable | resident |
| Forest | Subtropical/Tropical Mangrove Vegetation Above High Tide Level | suitable | resident |
| Forest | Subtropical/Tropical Moist Lowland | major | resident |
| Forest | Subtropical/Tropical Moist Montane | suitable | resident |
| Savanna | Moist | suitable | resident |
| Shrubland | Subtropical/Tropical Moist | suitable | resident |
| Altitude | 0 - 2500 m | Occasional altitudinal limits |
Recommended citation
BirdLife International (2024) Species factsheet: Plain Gerygone Gerygone inornata. Downloaded from
https://datazone.birdlife.org/species/factsheet/plain-gerygone-gerygone-inornata 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.