Mallard Duck

Dimorphic species. Males have an iridescent green head, thin white neck band, reddish-brown chest, gray-brown back, white flanks and underparts and a yellow bill. Two dark tail feathers have a distinctive upward curl. Female birds have mottled brown and black plumage, a dark streak through the eyes and an orange and brown bill. Both genders have orange legs and feet and a violet-blue patch of wing feathers bordered by white.