Hello, im brand new to all of this, but I have come to this place often to seek answers for some of my flock problems. I seem to be having one again. I hope this is a good place to ask, but I have this flock of female chickens. All seemed fine, I had a couple of roosters with them also. Well, after awhile the hens attacked and killed all my roosters, and then they started attacking each other. After a while, they stopped. They behaved all winter and now they're attacking each other. I can not seem to find one chicken doing it, I fear its most of the chickens attacking each other. Already I have had one death, a chicken with its tail feathers plucked out, and another one with a wound at the base of her tail. I do not know what to do. I searched everywhere for clues or answers, but found the same results. Cannibalism, over crowded, boredom, and having to much light (I have never ever heard of that, and I have raised chickens all my life) (I know about not having enough light and effecting the egg laying, but never to much light) What could I do?