Hi everyone I have 20-week old mallard male duck who just wants to hope on top of the female duck and my 6 chickens. He gets very aggressive and I'm constantly separating him. I don't have a rooster in the flock but my duck has gone as far as injuring my female duck, she was limping from how aggressive he gets while mating. She is better now. But now I have an injured chicken whose limping and I had to separate her for the flock. Any advice and tips are highly appreciated, I need help on what to do? Should I permanently separate the duck from the chickens or would a rooster help, I don't have a rooster yet