White-Tailed Flycatcher 
(Leucoptilon concretum, Đớp ruồi đuôi trắng)

The white-tailed flycatcher (Leucoptilon concretum) is a species of bird in the family Muscicapidae.

Compare:
- White-tailed flycatcher (Leucoptilon concretum): White feathers on the tail.
vs 
- Hainan Blue Flycatcher (Cyornis hainanus): No white feathers on the tail.

leucos Ancient Greek λευκός (leukós, “white”).
ptilon: shown by the alternative form ψίλον (psílon), relation to πέτομαι (pétomai, “to fly”), plumage. 
ptilo- : down : feather.
concreta / concretus Mod. L. concretus large, sturdy, strong.
Latin, English. concretum [concreti]  N noun. concrete.