Pallas's Leaf Warbler

How to identify

Field marks

1. Green upperparts; white underparts
2. Two pale yellow wing-bars
3. Bright yellow supercilium and median crown-stripe
4. Lemon-yellow rump, conspicuous in low vegetation or when hovering

Male, female and young

Sexes similar; juvenile has a rufous tinge to the upperparts, grayish-white underparts and a duller supercilium.

Voice

Call is a short, soft “dju-ee”; song is strong and sustained, consisting of whistles.

Similar species

Buff-barred Warbler

Larger, with darker green upperparts, less conspicuous markings than Pallas's Leaf Warbler, and buff rather than yellow wing-bars.

Brooks's Leaf Warbler

Larger, with dark green upperparts, less distinct markings than Pallas's Leaf Warbler, and white rather than yellow wing-bars.

Ashy-throated Warbler

Gray-tinged head, face and throat; pale yellow underparts.

Where and when it's recorded

Pallas's Leaf Warbler has been recorded at 1,140 of the 8,171 birding hotspots we track, in 37 countries and regions.

Records by month Northern Hemisphere

Where it's recorded most

1. Tai Po Kau Nature ReserveHong Kong (China)1,003 records
2. Yeliu IBATaiwan (China)746 records
3. Nanhui DongtanChina618 records

Countries and regions with the most records

ChinaThailandUnited KingdomMongoliaSouth KoreaRussiaGermanyVietnam

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

Pallas's leaf warbler (Phylloscopus proregulus) or Pallas's warbler is a bird that breeds in mountain forests from southern Siberia east to northern Mongolia and northeast China. It is named after the German zoologist Peter Simon Pallas, who first formally described it. This leaf warbler is strongly migratory, wintering mainly in south China and adjacent areas of southeast Asia, although in recent decades increasing numbers have been found in Europe in autumn.

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

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