Great myna

The great myna (Acridotheres grandis), also known as the white-vented myna, is a species of starling in the family Sturnidae. It is found in Nepal and Northeast India, through Bangladesh to Southeast Asia.

Description
It is black with elongated forehead feathers, forming a frontal crest that may curl backwards. Its beak and feet are yellow. It has white from the vent to the tip of the tail and a white wing patch.