Which warbler migrates from Siberia to Southeast Asia and is famous for its bright yellow eyebrow stripe?

The yellow-browed warbler migrates from Siberia to Southeast Asia and is famous for its bright yellow eyebrow stripe.

Yellow-browed warblers breed across northern Eurasia, including Siberia, and migrate south in autumn to wintering areas in Southeast Asia and southern China. During migration they can appear far west of their usual range, making them prized sightings in parts of Europe.

The species is a tiny leaf warbler with greenish upperparts, pale underparts and a strongly contrasting yellow supercilium, or eyebrow stripe. Its high, thin song and sharp calls can help observers locate it in dense foliage.

It is often confused with other small leaf warblers, especially Pallas's leaf warbler and the closely related Hume's leaf warbler. Plumage details, calls and the pattern of wing bars are important for reliable identification. Its migration is one example of the enormous seasonal movement between Siberian breeding forests and Asian wintering grounds.