Thai National Parks

Species of Thailand

Grey-cheeked warbler

Phylloscopus poliogenys

Edward Blyth, 1847

In Thai: นกกระจ้อยแก้มสีเทา

The grey-cheeked warbler (Phylloscopus poliogenys) is a species of leaf warbler (family Phylloscopidae). It was formerly included in the "Old World warbler" assemblage.

It is native to Bangladesh, Bhutan, China, India, Laos, Myanmar, Nepal, Thailand, and Vietnam. Its natural habitats are subtropical or tropical moist lowland forests and subtropical or tropical moist montane forests. Its population size is unknown, but due to its large range the species does not approach the thresholds for Vulnerable under the range size criteria. The population trend appears to be stable, so also under the population size criteria the species does not approach Vulnerable.

The grey-cheeked warbler was previously placed in the genus Seicercus. A molecular phylogenetic study published in 2018 found that neither Phylloscopus nor Seicercus were monophyletic. In the subsequent reorganization the two genera were merged into Phylloscopus which has priority under the rules of the International Commission on Zoological Nomenclature.

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Category / Seasonal Status

BCST Category: Recorded in an apparently wild state within the last 50 years

BCST Seasonal status: Uncertain

Scientific classification

Phylloscopus poliogenys

Common names

  • Thai: นกกระจ้อยแก้มสีเทา

Conservation status

Least Concern (IUCN3.1)

Least Concern (IUCN3.1)

Data Deficient (IUCN3.1)

Data Deficient (BCST)


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Grey-cheeked warbler

Range Map

Distribution map of Grey-cheeked warbler, Phylloscopus poliogenys in Thailand
  • Doi Inthanon National Park
  • Doi Phu Kha National Park
Range map of Phylloscopus poliogenys in Thailand