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 |
|---|---|---|
| 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/Near Threatened | |
| 1988 | Lower Risk/Least Concern |
| Migratory status | not a migrant | Forest dependency | High |
| Land mass type | Average mass | - |
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence breeding/resident (km2) | 484,000 | |
| Number of locations | - | |
| Severely Fragmented | - |
| Value | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| No. of mature individuals | unknown | not applicable | not applicable | 0 |
| Population trend | Unknown | not applicable | - | |
| 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) | 4.9 | - | - | - |
Population justification: The global population size has not been quantified, but the species is described as common in India and Myanmar and very local in China (del Hoyo et al. 2007).
Trend justification: The population trend is difficult to determine because of uncertainty over the impacts of habitat modification on population sizes.
| Country/Territory | Occurrence status | Presence | Resident | Breeding | Non-breeding | Passage |
|---|---|---|---|---|---|---|
| China (mainland) | N | Extant | Yes | |||
| India | N | Extant | Yes | |||
| Myanmar | N | Extant | Yes |
| Country/Territory | IBA Name |
|---|---|
| India | Magu Thingbu |
| India | Namdapha - Kamlang |
| India | Barail Range |
| India | Balpakram Complex |
| India | Mawphlang Sacred Grove |
| India | Nokrek National Park |
| India | Norpuh Reserve Forests |
| India | Upper Shillong |
| India | Ango or Anko Hills |
| India | Bunning Wildlife Sanctuary |
| India | Dzuku Valley |
| India | Kailam Wildlife Sanctuary |
| India | Shiroi Community Forest |
| India | Blue Mountain (Phawngpui) National Park |
| India | Lengteng Wildlife Sanctuary |
| India | Murlen National Park |
| India | Fakim Wildlife Sanctuary and Saramati area |
| India | Intaki National Park |
| India | Khonoma Nature Conservation and Tragopan Sanctuary |
| India | Mount Paona |
| India | Mount Zanibu |
| India | Mount Ziphu |
| India | Pfutsero-Chizami |
| India | Puliebadze-Dzukou-Zapfu |
| India | Satoi Range |
| India | Singhalila National Park |
| India | Barail Wildlife Sanctuary |
| India | Kamlang Wildlife Sanctuary and Reserve Forest |
| India | Namdapha National Park |
| India | Dailong Rongku Forest |
| India | Barail Range forests |
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Artificial/Terrestrial | Subtropical/Tropical Heavily Degraded Former Forest | suitable | resident |
| Forest | Subtropical/Tropical Moist Lowland | suitable | resident |
| Forest | Subtropical/Tropical Moist Montane | major | resident |
| Forest | Temperate | suitable | resident |
| Altitude | 900 - 2800 m | Occasional altitudinal limits |
Recommended citation
BirdLife International (2023) Species factsheet: Heterophasia gracilis. Downloaded from
http://www.birdlife.org on 23/03/2023.
Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from
http://www.birdlife.org on 23/03/2023.
