@walker1229 you know about how important it is to protect your female, right? If she is one, and the rest are drakes, her health and her life could be at risk. I am not overstating this. She depends on you for safety.
I echo Amiga. 1 drake to 3-4 females is max. I had to get rid of a whole bunch of drakes with my first batch of ducks - a straight run batch from a local feed store.