I have only one rooster, a Japanese Black Tailed Buff Bantam, and a flock of 15 standard sized hens. He is very gentle with the hens and people, but he definitely has his favourites, some he's indifferent to and one hen that he took a definite dislike to. He wouldn't share food and he'd often chase her away. That hen went off to live with friends and I thought everything would be harmonious but almost immediately he took a dislike to another hen - one, that up to that point, he was ok with.I notice that sometimes at night he is chasing the hen he doesn't like off the roost bars and she ends up sleeping in the nest box. What's up with that behaviour?Any suggestions for ways to change the balance? FYI: The hen he doesn't like is not low in the pecking order and gets along well with the other hens. I don't want to re-home her if he is going to pick on another hen once she's gone.