Strange behavior, girls are sitting on each other

Just to chime in with a nonexpert opinion: I don't think keeping the cages close together would be a problem. If they are not in the same cage, they can't hurt each other. Logically, I don't see how the presence of another female would make the hormones worse. Her aggression is another problem: She's pushing the other hen around in case a male comes along. Perhaps if you had another male close by it would make the hormones worse.

Another county heard from!