White-winged duck or white-winged wood duck (Asarcornis scutulata) 

The white-winged duck or white-winged wood duck (Asarcornis scutulata) is a large species of duck of the family Anatidae.

The white-winged duck was widely distributed from northeastern India and Bangladesh, throughout South East Asia.

anas, anatis: Latin duck.
Asarcornis is derived from Greek words: asarkos meaning "without flesh" and ornis meaning "bird". Therefore, the name literally translates to "without flesh bird".
scutulata: derived from the Latin word 'scutulatus': meaning 'chequered'; "diamond-shaped".
Scutulatus is a Latin term meaning "shield-shaped" or "diamond-shaped". It comes from the Latin word scutula, meaning "small plate," combined with the suffix -atus, meaning "provided with".