Gadwalls are gray ducks that have white bellies, black tail coverts and pale chestnut coloring on their wings. The canvasback has a whitish body and a chestnut head. They are more difficult to find than other birds so look for them in Rockport in the lake behind Key Allegro Island. Redheads have a color similar to canvasbacks except the redheads bodies are much grayer. Redheads are also more common than canvasbacks.
Lesser scaup are black above and white below.
If seen in a good light, the head may show a purple gloss. There is little chance to confuse it with a greater scaup because they seldom visit this area. The male American wigeon's white forehead and cap are conspicuous in fields and marshes where they are searching for food. Some winter specials are red-breasted mergansers, bufflehead, and common goldeneye. Also from time to time you may see a ring-necked duck.