Data Zone
Taxonomic note
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 | altitudinal migrant | Forest dependency | High |
| Land mass type | Average mass | 97 g |
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence breeding/resident (km2) | 2,410,000 | |
| Extent of Occurrence non-breeding (km2) | 2,990,000 | |
| 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) | 6.1 | - | - | - |
Population justification: The global population size has not been quantified, but the species is described as locally common throughout much of its breeding range, rare in China and an uncommon resident in northern Laos and northern Vietnam (del Hoyo et al. 2005).
Trend justification: The population is suspected to be in decline owing to ongoing habitat destruction and degradation.
| Country/Territory | Occurrence status | Presence | Resident | Breeding | Non-breeding | Passage |
|---|---|---|---|---|---|---|
| Bangladesh | V | Extant | ||||
| Bhutan | N | Extant | ||||
| China (mainland) | N | Extant | ||||
| India | N | Extant | ||||
| Laos | N | Extant | ||||
| Myanmar | N | Extant | ||||
| Nepal | N | Extant | ||||
| Pakistan | N | Extant | ||||
| Thailand | N | Extant | ||||
| Vietnam | N | Extant |
| Country/Territory | IBA Name |
|---|---|
| Nepal | Shivapuri-Nagarjun National Park |
| Nepal | Bardia National Park |
| Nepal | Langtang National Park |
| Nepal | Makalu Barun National Park |
| Nepal | Khaptad National Park |
| Nepal | Mai Valley forests |
| Nepal | Phulchoki Mountain forests |
| Nepal | Tamur valley and watershed |
| Nepal | Annapurna Conservation Area |
| Nepal | Dang Deukhuri foothill forests and west Rapti wetlands |
| India | Inderkilla National Park |
| Vietnam | Ban Bung |
| Vietnam | Ke Bang |
| Vietnam | Fan Si Pan |
| Nepal | Barandabhar forests and wetlands |
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Forest | Subtropical/Tropical Mangrove Vegetation Above High Tide Level | suitable | non-breeding |
| Forest | Subtropical/Tropical Moist Montane | major | breeding |
| Shrubland | Subtropical/Tropical Dry | suitable | non-breeding |
| Shrubland | Subtropical/Tropical Moist | suitable | non-breeding |
| Altitude | Occasional altitudinal limits |
Recommended citation
BirdLife International (2023) Species factsheet: Turdus boulboul. Downloaded from
http://www.birdlife.org on 01/04/2023.
Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from
http://www.birdlife.org on 01/04/2023.
