LC
Grey-winged Blackbird Turdus boulboul



Taxonomy

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.

IUCN Red list criteria met and history
Red List criteria met
Critically Endangered Endangered Vulnerable
- - -

Red List history
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
Species attributes

Migratory status altitudinal migrant Forest dependency High
Land mass type Average mass 97 g
Extent of occurrence (EOO)

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 2,410,000
Extent of Occurrence non-breeding (km2) 2,990,000
Number of locations -
Fragmentation -
Population and trend
Estimate 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 - - -
Largest subpopulations - - -
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 distribution
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

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Nepal Annapurna Conservation Area
Nepal Bardia National Park
Nepal Dang Deukhuri foothill forests and west Rapti wetlands
Nepal Khaptad National Park
Nepal Langtang National Park
Nepal Mai Valley forests
Nepal Makalu Barun National Park
Nepal Phulchoki Mountain forests
Nepal Shivapuri-Nagarjun National Park
Nepal Tamur valley and watershed

Habitats & altitude
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 (2019) Species factsheet: Turdus boulboul. Downloaded from http://www.birdlife.org on 13/12/2019. Recommended citation for factsheets for more than one species: BirdLife International (2019) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 13/12/2019.