Black-winged stilt 
(Cà kheo, Himantopus himantopus)

The black-winged stilt (Himantopus himantopus) is a very long-legged wader in the avocet and stilt family Recurvirostridae.

Charadrius, Charadriidae or Charadriiformes comes from the Ancient Greek kharadrios, meaning a bird found in river valleys or ravines ((kharadra) being ravine), and was later adopted into Late Latin. 

The name Recurvirostridae is derived from Latin, combining recurvus (bent back/curved) and rostrum (bill), referring to avocets' upturned bills.

Himantopus (himantopus) in Greek means "strap-foot" or "thong-foot," derived from the Greek words himas (leathern strap/thong) and pous (foot), perfectly describing the long, slender legs of stilt birds. This name refers to the bird's prominent, long legs that resemble straps or thongs.