Lately every time I crouch down near him my largest Muscovy boy comes over waggling his tail, stretching his neck and now he's making this strange sort of thumping noise. Is he being aggressive? Looking for food? Or putting the moves on me? They are tame, but not tamed, I don't think he's being aggressive, but this is new behaviour (his girls are usually around where he is though so he could be defending them I guess).