yea you can have all drakes if you can but if not your onley allowed 2 hens in your limit per day
thats if you are shooting mallards..
widgeon, teal, wooducks, gadwall, mergansers, bufflehead are a few off the top that you can have whatever as long as it does not exceed 7 total...Better read closely for redheads, scaup and pintail, scoter, barrows goldeneye etc. etc.