Brown teal  (Anas chlorotis)

In breeding plumage, the male ducks have a chestnut-coloured breast, a green head and a white stripe down both sides of the body. Some also have a white neckband. However, in non-breeding plumage, males look identical to females and juveniles, with non-descript mottled brown feathers, although males are slightly larger (4). Males utter soft, high-pitched whistles and pops, whereas females emit low quacks and growls (2).