One of my TS pullets turned out to be rooster. He's now about 1 year old, and I think he's been hurting some of my hens (19 hens). My oldest hen (about 4) was pecked on the back of her head very badly and bleeding, with the skin pulled away. She was walking around dizzily too. I was able to separate her, and she has healed nicely. She is separated, and has a little, young companion hen with her who has not pecked or bothered her. Now one of my other hens looks as if she has numerous feathers pulled away from the back of her head. Is this from the rooster mounting her and pulling on feathers with his beak to stay balanced, and on top? I do notice that when he mounts the hens, he uses his beak on the backs of their heads to steady himself. I have little experience with chickens. Is this losing of feathers entirely his doing, or are hens doing this to one another too? (pull feathers from the back of the heads of other hens). What is the advantage of keeping a rooster around? WE eat the eggs, but have no interest in hatching them. My birds have a half acre of grassy free-range, are fed and watered regularly, and have a secure coop for night time. If I were to cull him, what is the most humane way? Thanks.