I have a very mean English hen. She is about 1 yr old. She was the alpha amongst everyone else... ducks; younger hens; turkeys etc... She has never layed and is bossy and mean. I introduced a young roo and she kept him far appart from the rest of them. I decided to separate them and put the roo and the rest of the hens (but her) in another area. This week he began singing and mating w his ladies. I decided to reintroduce Mean Hen to them. I thought he was going to kill her... at first I thought he was just mating but he barely lets her move and keeps her under him as he walks over her almost dragging her. She fought him a couple times w no luck. This is her first night together and he is not letting her roost w them. Can he kill her if she keeps fighting him? Should I separate them or let them be? He is twice as big as him.