We have 2 females and 4 male pekin ducks. One of the males was getting picked on so we put him with the females and the 3 males together. This has been working good for the past months but yesterday I noticed that two of the males were missing feathers on their beck and the other was fine. This morning the two had scabs with blood on their necks. I separated the male who was picking on them. I don't know where to go from here. I can't keep him alone the rest of his life. I don't want to give him away and my parents are completely against getting more females. We have two coops with pens. During the day one of the groups is let out. We alternate them. Is it because of the spring weather we have been having? Any suggestions!?