Celestial, even with my 9 feeders they fight all the time because the more feeders you put out the more birds will come. There really isn't ever a peaceful time no matter how many feeders I put up. I don't think they know how to share! ;) A couple of years ago I had a bird that was so territorial that he was able to keep every bird away from his feeder for almost a month until all the birds got here, then it was just too tiring for him I guess. I'm very familiar with the bombing tactic lol, they like to attack from behind.