My drake has been mating with the duck hens for a few months and everything has been fine. I just went out of town on Wednesday and the petsitter has been having to bring a different duck hen in the house almost every night. I have one drake with four duck hens. Everyone is healthy except that he is going after their feet and tearing feathers out of their backs and wings. He will actually run after them and grab their foot to stop them from running. He drags them backwards by their foot and then starts tearing feathers out. He's broken their feather shafts and caused a bad infection in one of the girl's wings and her foot was so beat up, she couldn't walk for two days. Does anyone know why he would all of a sudden start doing this to him? This isn't normal mating behavior from him so I don't think it has anything to do with mating. I really don't want to have to put him down, but I will if I need to. He can't be hurting the girls like this. I have three duck hens in the house healing. I will be home in a few hours and I'm building him a "penalty box" in the coop to let him cool his jets. Besides that, I have no idea what to do.