I heard growling in our small coop the other day and went to investigate. I found our head rooster, Mr. Fuzzy Pants, an Ameraucana with a hen. He was in the corner with his head down scratching and growling. The hen in there with him was nesting or trying to, but then she left and he stayed. The whole time he was growling. It lasted at least five minutes and then he was on his way. Any ideas?