Chestnut-Crowned Warbler
(Chích đớp ruồi đầu hung, Seicercus castaniceps or Phylloscopus castaniceps)

The chestnut-crowned warbler (Phylloscopus castaniceps) is a species of leaf warbler (family Phylloscopidae).

Phylloscopidae, Phylloscopus: The Ancient Greek phullon meaning "leaf" and skopos meaning "seeker" (from skopeo, "to watch").
castaniceps Latin castaneus chestnut-coloured; -ceps -headed (caput head).