Leucoptilon is a genus of passerine birds belonging to the Old World flycatcher family Muscicapidae.
leucos Ancient Greek λευκός (leukós, “white”).
ptilon: shown by the alternative form ψίλον (psílon), relation to πέτομαι (pétomai, “to fly”) 
ptilo- : down : feather

1/ white-tailed flycatcher (Leucoptilon concretum)
Latin, English. concretum [concreti]  N noun. concrete