Narcissus flycatcher 
(Ficedula narcissina, Đớp ruồi lưng vàng)

The narcissus flycatcher (Ficedula narcissina) is a passerine bird in the Old World flycatcher family. 
The bird is native to the East Palearctic, from Sakhalin to the north, through Japan across through Korea, mainland China, and Taiwan and winters in southeast Asia, including the Philippines, Vietnam and Borneo.

The bird mates in Southeast Asia starting from early May.

The genus name Ficedula is from Latin and refers to a small fig-eating bird (ficus, "fig") supposed to change into the blackcap in winter.
The specific epithet narcissina is from narcissus flowers referring the the yellow colors on the throat of the male.