LC
Grey Treepie Dendrocitta formosae



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 not a migrant Forest dependency Medium
Land mass type Average mass -
Extent of occurrence (EOO)

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 8,110,000
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) 6.7 - - -

Population justification: The global population size has not been quantified, but the species is reported to be fairly common to common (Madge and Burn 1993), while national population sizes have been estimated at c.10,000-100,000 breeding pairs in China and c.10,000-100,000 breeding pairs in Taiwan (Brazil 2009).

Trend justification: The population is suspected to be in decline owing to presumably ongoing habitat destruction on Hainan (Madge and Burn 1993).


Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Bangladesh N Extant Yes
Bhutan N Extant Yes
China (mainland) N Extant Yes
Hong Kong (China) N Extant Yes
India N Extant Yes
Laos N Extant Yes
Myanmar N Extant Yes
Nepal N Extant Yes
Pakistan N Extant Yes
Taiwan, China N Extant Yes
Thailand N Extant Yes
Vietnam N Extant Yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Laos Nam Et
Laos Phou Loeuy
Laos Nam Ha
Laos Nam Xam
Laos Eastern Bolikhamxay Mountains
Laos Nakai Plateau
Laos Nakai-Nam Theun
Nepal Dang Deukhuri foothill forests and west Rapti wetlands
Nepal Chitwan National Park
Nepal Khaptad National Park
Nepal Kanchenjungha Conservation Area
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
Nepal Annapurna Conservation Area
India Barail Wildlife Sanctuary
India Barail Range forests

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Terrestrial Arable Land suitable resident
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
Shrubland Subtropical/Tropical Moist suitable resident
Altitude   Occasional altitudinal limits  

Recommended citation
BirdLife International (2020) Species factsheet: Dendrocitta formosae. Downloaded from http://www.birdlife.org on 09/07/2020. Recommended citation for factsheets for more than one species: BirdLife International (2020) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 09/07/2020.