Thai National Parks

Species of Thailand

Chestnut-crowned warbler

Phylloscopus castaniceps

Brian Houghton Hodgson, 1845

In Thai: นกกระจ้อยกระหม่อมแดง

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

It is found in Bangladesh, Bhutan, Cambodia, China, India, Indonesia, Laos, Malaysia, Myanmar, Nepal, Thailand, and Vietnam. Its natural habitats are subtropical or tropical moist lowland forest and subtropical or tropical moist montane forest. Nine subspecies are recognised across its range, and it forms a superspecies with the Sunda warbler and the yellow-breasted warbler.

It is arboreal and primarily insectivorous. Though not considered migratory, it may make small seasonal movements to higher or lower elevations.

The chestnut-crowned 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: Resident or presumed resident

Scientific classification

Phylloscopus castaniceps

Common names

  • Thai: นกกระจ้อยกระหม่อมแดง

Conservation status

Least Concern (IUCN3.1)

Least Concern (IUCN3.1)


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Chestnut-crowned warbler

Range Map

Distribution map of Chestnut-crowned warbler, Phylloscopus castaniceps in Thailand
  • Chae Son National Park
  • Chiang Dao Wildlife Sanctuary
  • Chiang Saen District, Chiang Rai
  • Doi Inthanon National Park
  • Doi Lang
  • Doi Pha Hom Pok National Park
  • Doi Saket District, Chiang Mai
  • Doi Suthep - Pui National Park
  • Hala-Bala Wildlife Sanctuary
  • Huai Nam Dang National Park
  • Khao Luang National Park
  • Mae Wong National Park
  • Nong Bong Khai Non-Hunting Area
  • Umphang Wildlife Sanctuary
Range map of Phylloscopus castaniceps in Thailand