Hume's Warbler, also called Hume's Leaf Warbler, is native to mountain forests of Central Asia and the Himalayas and winters in India.
It looks similar to the related Yellow-browed Warbler (P. inornatus) but has duller plumage,
a black lower beak and black legs (and a different sound).
Photos on this page were taken by Alexandra Makhnina in Kazakhstan.