Little buttonquail (Cun cút bé, Turnix velox) 

The little buttonquail (Turnix velox) is a species of buttonquail family Turnicidae.

Charadriidae, Charadrius: Late Latin word for a yellowish bird mentioned in the fourth-century Vulgate; from Ancient Greek kharadrios a bird found in ravines and river valleys (kharadra, "ravine").

Turnicidae is from Turnix abbreviation from genus Coturnix, quail(Coturnix is the Latin for the common quail); coined to reflect the quail-like appearance and lack of hind-toe.
The genus name Turnix is an abbreviation of the genus Coturnix.

The family Turnicidae is also referred to as hemipodes which , in Greek, means hemi half, semi; podes from Greek pous, podos foot (Latin pes).

Velox is a Latin word meaning "swift, quick, rapid,speedy" or "fleet" deriving from a root related to motion; it's the source of English words like "velocity".