
I was walking along a lake, part of the Okhla Bird Sanctuary in New Delhi, India, when I spied a familiar duck. Could that be a Green-winged Teal? But after looking through my field guide, I discovered that Green-winged Teal wasn’t one of the options. There was, however, an illustration of a Common Teal that looked similar, so I jotted down the name and, for insurance, snapped a photo of the bird: