Explanation: White-winged Duck or White-winged Wood Duck is the state bird of Assam. Locally known as Deohaanh, the White-winged Duck or White-winged Wood Duck (Asarcornis scutulata) is an endangered species of duck. According to recent data, only around 800 of these birds are present in wild. In India, White-winged Duck is found mainly in eastern Assam and nearby areas of Arunachal Pradesh.