Umesh Mani recalls that his eyes landed on a male Gadwall’s all-black bill. Chandrasekar Sundaram first saw the same male Gadwall’s greyish colour, and it was the black rump that settled the question for him. Then, on the other side of the waterbody, we saw one more male and two female gadwalls,” says Gnanaskandan. A female Gadwall Photo: Umesh ManiHaving lived in Hyderabad, Umesh points out that in waterbodies there, he had seen Gadwalls with Wigeons. “It helps to know which ducks Gadwalls associate with.

Source: The Hindu December 26, 2020 07:32 UTC