It is also known as, Brahminy Shelduck due to its colour, & ‘Chakrawak’. 
This large, beautiful duck is also mentioned in ancient literature. It is spread over parts of Africa, Europe & Asia, often in Turkey & Iraq too. But main breeding areas are southeast Europe across central Asia to southeast China & wintering in southern Asia. Its favoured habitat is freshwater lakes but often visits polluted water. It is also found away from water in mountains & grasslands. 
It can be easily identified with chestnut brown colour. It is omnivorous, mainly feeds on aquatic vegetation, grain, vegetable shoots, tubers, reptiles, small aquatic life like crabs, mollusks, snails, etc.