Thai National Parks

Species of Thailand

Alstrӧm's warbler

Phylloscopus soror

Per Alström & Urban Olsson, 1999

In Thai: นกกระจ้อยวงตาสีทองหางสีเรียบ

Alström's warbler, or plain-tailed warbler (Phylloscopus soror) is a species of Old World warbler in the family Phylloscopidae. The species was first described in 1999. It breeds only in China, and winters in Thailand, Laos, Cambodia and Vietnam. Its natural habitat is temperate forests.

Alström's 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. The common name honours the Swedish ornithologist Per Alström.

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Category / Seasonal Status

Wiki listed status (concerning Thai population): Winter visitor

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

BCST Seasonal status: Non-breeding visitor

Scientific classification

Phylloscopus soror

Common names

  • English:
    • Alstrom's warbler
    • Plain-tailed warbler
  • Thai: นกกระจ้อยวงตาสีทองหางสีเรียบ

Conservation status

Least Concern (IUCN3.1)

Least Concern (IUCN3.1)


No photo for this species yet

Range Map

Distribution map of Alstrӧm's warbler, Phylloscopus soror in Thailand
  • Bangkok Province
  • Chiang Dao Wildlife Sanctuary
  • Doi Inthanon National Park
  • Doi Pha Hom Pok National Park
  • Doi Suthep - Pui National Park
  • Kaeng Krachan National Park
  • Khao Khitchakut National Park
  • Khao Laem National Park
  • Khao Soi Dao Wildlife Sanctuary
  • Khao Yai National Park
  • Khun Nan National Park
  • Klaeng District, Rayong
  • Kui Buri National Park
  • Laem Pak Bia
  • Mae Moei National Park
  • Mae Wong National Park
  • Mueang Khon Kaen District, Khon Kaen
  • Na Yung - Nam Som National Park
  • Nam Nao National Park
  • Pha Nam Yoi Forest Park
  • Phu Khiao Wildlife Sanctuary
  • Phu Kradueng National Park
  • Phu Langka National Park
  • Phu Suan Sai National Park
  • Phutthamonthon District, Nakhon Pathom
  • Sakaerat Environmental Research Station
  • Taksin Maharat National Park
  • Thung Yai Naresuan Wildlife Sanctuary
  • Wang Mai Forest Restoration Project
Range map of Phylloscopus soror in Thailand