If you have too many roosters, a simple solution is to start a rooster flock. A rooster flock is a flock that consists of all roosters and no hens.

Feeding and Watering Your Rooster Flock
If you have more than two roosters in your rooster flock, it's a good idea to have multiple feeders and waterers. Two or three feeders and two waterers is a good amount for most roo flocks. It's not always necessary to have multiple feeders and waterers, especially if you always have a full feeder or have easy going roosters.

To feed your rooster flock, many people recommend flock raiser, grower, all flock, or another similar feed instead of layer feed. Roosters (and other non-laying birds) don't need the extra calcium in layer feeds, and it can damage them if fed for long term.

Introducing New Roosters to Your Rooster Flock
There are a few different ways to introduce new roosters into your existing flock. One way is to simply put the new rooster in the pen and watch to make sure the other roos don't beat on him too much. When you have less roosters in your flock, this method is more successful. It also works better if you have generally mild mannered or younger roosters.

Another method of integrating roosters into your rooster flock involves putting them into a smaller cage within the main rooster pen. I have had success with this method, and it's been helpful when the above method didn't work. It's usually necessary when you have a larger number of roosters or a more assertive flock.
I usually only keep the rooster(s) in the smaller cage for a day or two, but if you feel that they need to be in there longer, then go ahead! I find that a large dog crate is usually sufficient when adding new roosters using this method.

Most of the time I find that it's better to add new roosters to your rooster flock while they're free-ranging. This way the new rooster can easily get away from the others. It also prevents all the original roos from ganging up on the new one and injuring him more than necessary.
Even if you have a large run, or if you can't free-range your roosters at all, they will still be fine as long as you take the proper precautions, such as the cage in the pen method, as well as keeping a closer eye on your roos for a couple days after the new guy(s) are introduced.

If you're afraid that your roosters are being too rough with the new roos, remember that comb and wattle wounds often look a lot worst than they actually are. Just like in a flock of hens, the newest members are picked on a little more than is really needed to establish the pecking order. While they're getting to know each other, your roosters will fight, it's just a normal way for them to figure out their ranks.
If you are still worried, don't hesitate to check up on the new flock members and maybe even clean off their comb a bit if it needs it. I usually do this right after introduction, so I can also check to make sure the new rooster is not injured in any other way.

How to Deal With Bullies
In a rooster flock, a few fights to establish the pecking order are perfectly normal. But, if a rooster is constantly attacking and/or chasing another rooster and not leaving him alone, you might need to intervene.

Roosters will bully each other for a variety of reasons. Sometimes the pen is too small, and they're fighting because of stress due to lack of space. Or, the bully is a young rooster who wants to dominate the older roosters that once bullied him. It could be that your bully rooster is just overly assertive, or has a feud against another rooster in your flock.

There are several ways to deal with a bully rooster. One way is separating him for a little while from the rest of the flock. When he's added back in, usually within a week or so, he will have to establish his rank in the flock all over again and learn his place, thus causing him to forget about the other rooster and mature a little. Another way to deal with bullies is to expand the roosters' pen and/or add more feeders and waterers. Your rooster pen should have at least as much space as you'd give the same number of hens.

It usually takes a while for a new rooster to be fully accepted by the rest of the rooster flock. For instance, I added a new cockerel to my flock and he got bullied for around two weeks before they finally accepted him. He still occasionally gets pecked or chased, but it's only to remind him what position he is at in the pecking order.

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