Gansu leaf warbler 
(Phylloscopus kansuensis, Chích lá Cam Túc)

The Gansu leaf warbler (Phylloscopus kansuensis) is a small passerine bird known only from China.

Leaf warblers were formerly included in the Old World warbler family but are now considered to belong to the family Phylloscopidae, introduced in 2006.
The name Phylloscopus combines the Ancient Greek phullon meaning "leaf" and skopos meaning "seeker" (from skopeo, "to watch").