|Blue-winged teal, Anas discors. The male has a distinctive white crescent on the face. Click to enlarge.
|Northern shoveler ducks, Anas clypeata, famous for the large bill. The colorful male is on the right and behind the relatively drab but equally big-beaked female.
|The familiar mallard duck, Anas platyrhynchos. The green-headed male has a clear yellow bill.