You can shoot any duck on the coast without the seaduck card, EXCEPT Scoters (all three kinds), Oldsquaw (Longtail), Harlequin, and both kinds of Goldeneye.
Mallards, Wigeon, Teal, Pintail, Ringneck, Bufflehead, Canvasback, Scaup, Mergansers, Redhead, and Coots (might have missed some) are all OK to shoot with only the State Waterfowl endorsement and the Federal Duck Stamp.