Has a dark body, and a paler head with a dark crown and facial stripes. In flight, it shows a green speculum and pale underwing. All plumages are similar. The size range is 54–61 cm; males tend to be larger than females
This female stopped by our place three years in a row. She hung out with our Muscovy ducks for about a week, feeding with them, until it was time for her to move on.