My mallard drake is tearing up the necks of my pekin ladies... he is too little to get the job done so he is over aggressive with them. Our pekin mix drake does a decent job of keeping him away during the day but he has to be locked separate at night to keep from killing our mallard female. We don't really have another place to lock up this drake at night too but he does it during the day too. Would getting more females help this issue or would he still over mate these two because he is unsuccessful??!