Hey adkrock! Welcome.
I had two roosters, a couple years ago, out of 4 chickens. Pullets at the time. So, they all looked the same. When we started getting eggs, we couldn't understand why we only got two. One day, while I was cleaning the coop, I noticed two of them had really colorful neck feathers. That's when the light bulb went on in my head. I'm thinking, man did I get gipped. No sooner did I tell my wife, they started crowing the next morning. It was kind of neat, for a while. But, then they started at midnight! 2 am, 3am, all day! Not cool at all. Like Mike was saying, once they were full grown, they both started picking on the two hens. Plucked their lower back feathers down to the skin. Plus, they started acting weird when my 4 year old would be close to the hens. That was it. One winter weekend, with my wife and kids out of the house, I took care of the both of them. They made really good soup.
If this is something you wouldn't be up to, I'd trying selling/trading the roos. If you have an Amish market near you, they usually do that kind of thing. I hope this helps.