Yellow-breasted warbler 
(Phylloscopus montis) 

The yellow-breasted warbler (Phylloscopus montis) is a species of Old World warbler in the family Phylloscopidae.
It is found in Indonesia, Malaysia, and Palawan Island in the Philippines, Central Highlands of Vietnam.

Phylloscopidae, Phylloscopus: combines the Ancient Greek phullon meaning "leaf" and skopos meaning "seeker" (from skopeo, "to watch").
mons, montis: Latin for mountain, of a mountain.