We have 6 Rouen ducks, 4 females and 2 males, all almost a year old and raised together. One male hurt his leg as a youngster and gets around fine but has a slight limp. The other male initially bullied this male and tried to push him away from the flock. One female insisted on staying with the cast out male even though the dominant male persisted in obtaining her. Eventually he left the other male alone, allowed him (for the most part) the one female companion and he took the other 3. The ducks have a large pond and an inside duck coop for night time and inclement weather. One of his females began laying on eggs within the coop and did not want to go outside with the others for several weeks. Every day when the others came in, the dominant male would immediately grab her by the neck and pull her off the nest. Initially I thought he was trying to mate her after being apart all day, reassert himself. Well the eggs did not hatch and it was when she started going back outside that I noticed he wasn't trying to mate her, he was attacking her, pushing her away from the flock. We run him off when we see this but there is plenty of opportunity when we are not around and she is stripped of feathers up the back of her neck and has become meek and withdrawn, often off by herself which worries me with other animals around, mainly the barn cats. He does allow her to eat with the others it seems, perhaps because we are watching, I'm not sure. We are considering putting the dominant drake in a timeout and allow her to get back with the others who don't seem to have a problem with her. However we have also read that it can make the drake even more aggressive when re-introduced. Any advice greatly appreciated!