Radde's Warbler

Phylloscopus schwarzi (Radde, 1863)

≈12 cmLength11 gWeight

It has a long white supercilium and a thicker bill than Dusky Warbler, and is more inclined to be active on the ground.

Busiest months: May · Most records: Thailand, China, Cambodia

Looks like Dusky Warbler

Least Concern

How to identify

Field marks

Long, conspicuous white supercilium
Unmarked rufous back; yellowish-brown belly
Pointed, rather thick bill
Legs paler than in Dusky Warbler; feet look large

Male, female and young

Sexes similar; juvenile has a yellower belly.

Voice

A soft “chick”.

Similar species

Dusky Warbler

Radde's Warbler has a thicker bill, paler legs and apparently larger feet.

Where and when it's recorded

Radde's Warbler has been recorded at 551 of the 8,171 birding hotspots we track, in 25 countries and regions.

Records by month Northern Hemisphere

Where it's recorded most

Khao Yai NPThailand424 records
Taksin Maharat NP – headquarters vicinityThailand383 records
Kaeng Krachan NPThailand288 records

More places

TmatboeyCambodia274 records
Happy IslandChina222 records
Muravyevka ParkRussia203 records
Kaeng Krachan NP – km 9 vicinityThailand175 records
Beidaihe [General Area]China164 records
Khao Yai NP – headquarters vicinityThailand141 records
Khao Yai NP – Pha Trom Jai Viewpoint & Air Force Base vicinityThailand136 records

Countries and regions with the most records

Thailand China Cambodia Vietnam United Kingdom South Korea Russia Japan

eBird records via GBIF up to 2024-12-31. A record means someone listed it; more records partly mean more birders, not more birds.

About

Radde's warbler (Phylloscopus schwarzi) is a leaf warbler which breeds in Siberia. This warbler is strongly migratory and winters in Southeast Asia. The genus name Phylloscopus is from Ancient Greek phullon, "leaf", and skopos, "seeker" (from skopeo, "to watch").

Excerpt from Wikipedia, CC BY-SA 4.0 · authors · Read more on Wikipedia

Questions

How big is the Radde's Warbler?

The Radde's Warbler is about ≈12 cm long and weighs around 11 g.

Where does the Radde's Warbler live?

Its breeding range: Palearctic: eastern Kazakhstan and southern Russia to southeastern Russia and North Korea. It is most often recorded in Thailand, China and Cambodia.