Yesterday we noticed that our Rouen drake had been chasing/picking on 1 particular female. We have 1 Rouen drake and 7 other female ducks. He chases her away from the flock and the food. How do I deal with him? Solitary confinement or table? He doesn't pick on anyone else. He will lower his head and nip at her and chase her - just down right mean. Is he just just trying to establish dominance and she isn't cooperating?? I should ask - is there a way to 'fix' him?