I only have 4 chickens - 1 SLW roo, 1 BA hen, and 2 Millie Fleur d'Uccle hens. They are about 11 months old and have lived together since I brought them home as little chicks last May. They get along fine but my roo has started hurting my little girls now that they have started laying again. I hear them scream multiple times every day and one of them is missing a lot of feathers from her neck area. There are no missing feathers on their backs, just the back of their necks where he grabs them and they try desperately to get away from him. Last year, when they all first started mating, he was so gentle with them and they never screamed or pulled feathers out trying to escape his grasp. I witnessed him mating with them so I know it was happening. My BA, who is twice the size of the Millies, doesn't scream when he mates with her. I have a tractor that I could put the two bantams in to keep them separated from my roo. It is inside the run so they could be with him without being accessible to him. What would you do?