How old are they?
Do they do this only when you are not present? If so, that suggests that they know they're doing something you would disapprove of and you're the alpha--which also means that the second they see you as vulnerable they're going to try to unseat you and take the head spot.
You need to identify which is the problem. I would suggest rooster jail, or a bachelor pad. Lock up three of the four, let the other out for a week or two until things settle down. Watch the behavior closely. If no sign of human aggression, mark the bird clearly, lock it up with the other boys and let another out.
It is entirely possible that the aggression is caused by competition issues and won't manifest with only one roo out, but I agree with the others. Once they start getting aggressive, it will only accelerate unless you're willing to put in some time for intensive training. A bird is not worth weeks or months of constant attention, in my opinion.
Do they do this only when you are not present? If so, that suggests that they know they're doing something you would disapprove of and you're the alpha--which also means that the second they see you as vulnerable they're going to try to unseat you and take the head spot.
You need to identify which is the problem. I would suggest rooster jail, or a bachelor pad. Lock up three of the four, let the other out for a week or two until things settle down. Watch the behavior closely. If no sign of human aggression, mark the bird clearly, lock it up with the other boys and let another out.
It is entirely possible that the aggression is caused by competition issues and won't manifest with only one roo out, but I agree with the others. Once they start getting aggressive, it will only accelerate unless you're willing to put in some time for intensive training. A bird is not worth weeks or months of constant attention, in my opinion.

