I've never had chickens before, so wanted to ask y'all this question. When I was in this morning feeding the chickens, one of the roosters bit one of the hens on the back of the neck. He was standing behind and over her and she was squaking like she was royally PO'd. None of the hens are laying yet (I got them at a week old in late August) but I have noticed they are making nests, getting in the nesting boxes, some of them have bright red combs, etc. So they are getting close. I don't know if this behavior is aggression or mating. Thanks!