Galveston area...What kind of ducks?

Im curious. What kind of ducks are in the bay/galveston area? I know there are Redheads and Shovelers/Spoonbill. What other kinds of ducks frequent the coastline/bays?

You can see just about any duck but what you're likely to see is redheads, pintail, bufflehead, bluebill, wigeon, teal.