You have a bit of a problem. They are going through adolescence. Different cockerels mature at different rates. Waylon matured later than Willie but now is the dominant one. They will continue maturing so there could be other shifts, but probably not. If you have other younger cockerels you could go through this again as they mature.
It’s possible Waylon will continue to be this aggressive toward Willie but since this is a pretty recent switch, he is probably just reinforcing his victory and keeping Willie knocked down. I agree space is a big key, but it is quite possible they will work out their differences and work together as a team to protect the hens. Still, it is a risk and right now hormones are running pretty wild. It is almost certain Waylon will remain in charge. It is also possible Waylon will kill Willie if they are left alone. You don’t get guarantees with living animals, especially with adolescent cockerels trying to become flock master.
Watching a flock of chickens go through adolescence is often not for the faint of heart, especially with no mature rooster helping keep peace in his flock. Even with a mature rooster it can get pretty rough. The hormones are running wild, the adolescents have not learned self-control, cockerels and pullets mature at different rates; it can be a real mess. Normally if you can stand to get through this phase they settle down into a nice peaceful flock with the dominant rooster and the hens all behaving like mature adults. Normally. But it is also possible for a rooster or a hen to always be a jerk. It’s really hard to tell when they are adolescents.
If you want Willie to be flock master, get rid of Waylon now. If you want to keep Waylon around then you take your chances with how he matures and what happens along the way.
Adolescent chickens mating is often really rough. It’s not just about sex, it’s also how a cockerel establishes dominance over his flock. I know I’m repeating myself but I want to emphasize this. It is often not for the faint of heart to watch. Some people may see it as rape but it’s how chickens sort out flock society. It’s a phase they go through. Normally they get through it without any serious injury, but occasionally pullets get hurt. The risk of multiple cockerels getting hurt while sorting out their ranking in the flock is much higher but with enough space even that usually works out. But it may take a lot of space. And sometimes cockerels die.
I always recommend that you keep as few roosters as you can to meet your goals, not that you are guaranteed problems with multiple roosters or even just one rooster, but that the more roosters you have the more likely you are to have problems. I don’t know your goals or how much room you really have, but it sounds like your best number for a rooster is one, maybe even none if you consider normal chicken mating to be rape. What you often see with adolescents is not really normal mating until the hormones settle down.
