LC
Grey-cheeked Warbler Phylloscopus poliogenys



Taxonomy

Taxonomic note

Phylloscopus poliogenys (del Hoyo and Collar 2016) was previously listed as Seicercus poliogenys.

 

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.

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

Red List history
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
Species attributes

Migratory status altitudinal migrant Forest dependency high
Land-mass type Average mass 6 g
Range

Estimate Data quality
Extent of Occurrence (breeding/resident) 2,280,000 km2
Severely fragmented? no -
Population
Estimate Data quality Derivation Year of estimate
Population size unknown - - -
Population trend decreasing - suspected -
Generation length 1.93 years - - -

Population justification: The global population size has not been quantified, but the species is reported to be locally common (Baker 1997). This species is considered to have a high dependency on forest habitat, and tree cover is estimated to have declined by 10.5% within its mapped range over the past 10 years (Global Forest Watch 2022, using Hansen et al. [2013] data and methods disclosed therein). It is therefore tentatively suspected that this rate of cover loss may have led to a decline of between 1-19% in the species' population size over the same time frame, with a best estimate of reduction being 11-14%.

Trend justification:   .


Country/territory distribution
Country/Territory Presence Origin Resident Breeding visitor Non-breeding visitor Passage migrant
Bhutan extant native
China (mainland) extant native
India extant native
Laos extant native yes
Myanmar extant native
Nepal extant native
Thailand extant native
Vietnam extant native

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Laos Dakchung Plateau
Laos Nakai-Nam Theun
Laos Nam Ha
Laos Nam Xam
Laos Phou Ahyon
Laos Phou Loeuy
Laos Xe Sap
Nepal Annapurna Conservation Area
Nepal Mai Valley forests
Nepal Makalu Barun National Park
Thailand Doi Suthep-Pui
Thailand Mae Jarim National Park
Vietnam Fan Si Pan
Vietnam Van Ban

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Forest Temperate major resident
Altitude 130 - 2450 m Occasional altitudinal limits  

Recommended citation
BirdLife International (2024) Species factsheet: Grey-cheeked Warbler Phylloscopus poliogenys. Downloaded from https://datazone.birdlife.org/species/factsheet/grey-cheeked-warbler-phylloscopus-poliogenys on 23/12/2024.
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 23/12/2024.