Hi. I am needing some advice about a duck. Let me start from beginning. I had 2 female ducks for several years. One of them got sick and passed away last July. So I got an 8 wk old duck to replace her. My female Rouen welcomed him nicely. They were buddies. In October something got into my outside duck pen and killed my 5 yr old female. The male who was 5 mo at the time was injured but alive. He had bites on his head and neck and back. We kept him in the garage while he healed. He was very traumatized. When he was feeling better I put him back in the yard during the day. He then would spend all his time sitting on our back step looking in the door. But when my dogs would go outside he would follow them around as if looking for a friend. So in November I got 2 new baby ducks. I slowly introduced them to my male duck. Put them in a pen together when the babies were 9 wks old. Male duck seems to like them. But now he has become aggressive toward me and my dogs. He turns to me and tries to bite me when he used to run from me. And when I put my dogs out in the yard he runs quickly at them and bites them. Attacks them. He also still sits on the back step even though he now has duck friends. He will not wander the yard like he did before the attack. Is it possible that he sustained brain damage when he was attacked? What should I do with him? I am afraid he is going to turn on my new ducks and hurt them. I also fear that he is hindering my new ducks from learning to be ducks because they want to be near him so they also sit at the back door all day. Help!! I don't know what to do with him. Any advice??