Sri Lanka green pigeon 
or Ceylon green pigeon 
(Cu xanh đuôi đen, Treron pompadora) 
Many authorities split the species from the pompadour green pigeon complex.

The Pompadour green pigeon, Sri Lanka green pigeon or Ceylon green pigeon (Treron pompadora) is a pigeon in the genus Treron.

Columbidae, Columba: Latin columba (“dove, pigeon”). Ancient Greek κόλυμβος (kólumbos, “a diver”), from κολυμβάω (kolumbáō, “dive, plunge headlong, swim”).
Pigeon is a French word that derives from the Latin pīpiō, for a "peeping" chick;
Dove is an ultimately Germanic word that refers to the bird's diving flight.
The genus name Treron is from the Ancient Greek trērōn meaning "pigeon" or "dove".