Tickell's leaf warbler (Phylloscopus affinis)

Tickell's leaf warbler (Phylloscopus affinis) is a leaf warbler found in Asia in the countries of Bangladesh, Bhutan, China, India, Myanmar, Nepal, Pakistan and Thailand.

The name Phylloscopus combines the Ancient Greek phullon meaning "leaf" and skopos meaning "seeker" (from skopeo, "to watch").
affinis is from Latin adfinis or affinis meaning "related" or "allied".