Thai National Parks

Birds of Thailand

Species of Thailand

Radde's warbler

Binomial name: Phylloscopus schwarzi, Gustav Ferdinand Richard Radde, 1863

Radde's warbler (Phylloscopus schwarzi) is a leaf warbler which breeds in Siberia. This warbler is strongly migratory and winters in southeast Asia. The scientific name commemorates the German astronomer Ludwig Schwarz (1822–1894).

Description

This is a warbler similar in size to a willow warbler. The adult has an unstreaked brown back and buff underparts. There is a very long prominent whitish supercilium, and the pointed bill is thicker than that of the similar dusky warbler. The legs are paler than dusky's, and the feet look large, reflecting the more terrestrial lifestyle of this warbler. The sexes are identical, as with most warblers, but young birds are yellower below. The call is a soft chick.

Distribution and habitat

Radde's warbler breeds in southern parts of Central and Eastern Siberia as far east as Korea and Manchuria. It is a migratory species and spends the winter in Thailand, Burma, Laos and Cambodia. In its breeding range, Radde's warbler is found in open deciduous woodlands with some undergrowth and bushy woodland margins, often near water. In its winter quarters it occupies the fringes of forests, thick scrub and bushy places near woodland. Like most Old World warblers, this small passerine bird is insectivorous.

Breeding

The nest is built low in a bush and about five eggs are laid. They have a greyish background colour mottled and streaked with fine markings of brownish-olive, scattered evenly over the surface and which nearly obscures the base colour. They are approximately 17 by 13 mm.

This small warbler is prone to vagrancy as far as western Europe in October, despite a 3000 km distance from its breeding grounds. It has been recorded from the Copeland Bird Observatory in County Down, Northern Ireland where it was first recorded for Northern Ireland in 2008. It has also occurred as an accidental in Heligoland.

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Scientific classification

Kingdom
Animalia
Phylum
Chordata
Class
Aves
Order
Passeriformes
Family
Phylloscopidae
Genus
Phylloscopus
Species
Phylloscopus schwarzi

Conservation status

Least Concern (IUCN3.1)

Least Concern (IUCN3.1)

Radde's warbler

Radde's warbler

Copyright iStockphoto,

Radde's warbler (phylloscopus schwarzi)

Radde's warbler (phylloscopus schwarzi)

Creative Commons Attribution-ShareAlike 2.0 Generic

Distribution map of Radde's warbler, Phylloscopus schwarzi in Thailand
  • Ban Phai District, Khon Kaen
  • Bang Phra Non-hunting Area
  • Bang Pu Recreation Centre
  • Bangkok Province
  • Bueng Boraped Non-hunting Area
  • Chat Trakan Waterfall National Park
  • Chiang Dao District, Chiang Mai
  • Chiang Dao Wildlife Sanctuary
  • Chiang Saen District, Chiang Rai
  • Doi Inthanon National Park
  • Doi Lo District, Chiang Mai
  • Doi Pha Hom Pok National Park
  • Doi Suthep-Pui National Park
  • Huai Kha Khaeng Wildlife Sanctuary
  • Huai Nam Dang National Park
  • Huai Sala Wildlife Sanctuary
  • Huai Talat Reservoir Non-hunting Area
  • Kaeng Khoi District, Saraburi
  • Kaeng Krachan District, Phetchaburi
  • Kaeng Krachan National Park
  • Kamphaeng Saen District, Nakhon Pathom
  • Kanthararom District, Sisaket
  • Kaset Sombun District, Chaiyaphum
  • Khao Ang Rue Nai Wildlife Sanctuary
  • Khao Khitchakut National Park
  • Khao Laem Ya National Park
  • Khao Sam Roi Yot National Park
  • Khao Soi Dao Wildlife Sanctuary
  • Khao Yai National Park
  • Khlong Lan National Park
  • Khlong Luang District, Pathum Thani
  • Khun Nan National Park
  • Klaeng District, Rayong
  • Kui Buri National Park
  • Kumphawapi District, Udon Thani
  • Laem Pak Bia
  • Mae Ai District, Chiang Mai
  • Mae Charim National Park
  • Mae Ping National Park
  • Mae Rim District, Chiang Mai
  • Mae Wong National Park
  • Mu Ko Chang National Park
  • Mueang Chiang Mai District, Chiang Mai
  • Mueang Kanchanaburi District, Kanchanaburi
  • Mueang Khon Kaen District, Khon Kaen
  • Mueang Nakhon Nayok District, Nakhon Nayok
  • Mueang Phayao District, Phayao
  • Mueang Samut Sakhon District, Samut Sakhon
  • Mueang Suphanburi District, Suphan Buri
  • Mueang Tak District, Tak
  • Nam Nao National Park
  • Non Thai District, Nakhon Ratchasima
  • Nong Bong Khai Non-hunting Area
  • Nong Song Hong District, Khon Kaen
  • Pai District, Mae Hong Son
  • Pak Thale
  • Pang Sida National Park
  • Pha Daeng National Park
  • Pha Taem National Park
  • Phu Foi Lom National Park
  • Phu Hin Rong Kla National Park
  • Phu Khiao Wildlife Sanctuary
  • Phu Kradueng National Park
  • Phu Luang Wildlife Sanctuary
  • Phu Suan Sai National Park
  • Phutthamonthon District, Nakhon Pathom
  • Sai Noi District, Nonthaburi
  • Sai Yok District, Kanchanaburi
  • Sakaerat Environmental Research Station
  • Samae San Island
  • Samut Prakan Province
  • Sanam Bin Reservoir Non-hunting Area
  • Sri Phang-nga National Park
  • Taksin Maharat National Park
  • Tat Mok National Park
  • Tha Yang District, Phetchaburi
  • Tham Sakoen National Park
  • Thanyaburi District, Pathum Thani
  • Thap Lan National Park
  • Thong Pha Phum National Park
  • Thung Salaeng Luang National Park
  • Umphang Wildlife Sanctuary
  • Wat Phai Lom & Wat Ampu Wararam Non-hunting Area

Range map of Phylloscopus schwarzi in Thailand

Important note; our range maps are based on limited data we have collected. The data is not necessarily accurate or complete.

Special thanks to Ton Smits, Parinya Pawangkhanant, Ian Dugdale and many others for their contribution for range data.

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