Great egret 
(Cò ngàng lớn, Ardea alba), also known as the common egret, large egret, or (in the Old World) great white egret or great white heron

The great egret (Ardea alba) is a bird species of the heron family Ardeidae.
This bird species is distributed across most of the tropical and warmer temperate regions of the world

Ardea is a genus of herons. The genus name comes from the Latin word ardea meaning "heron".
The scientific name comes from Latin ardea for "heron", and alba for "white".
formerly placed in Egretta genus.