I am beginning the process of deciding on new chicks to order. I want to have some purebred roos I can mate with purebred hens (will segregate them in their own coop while collecting hatching eggs to keep the breed pure). However, the rest of the time, these chickens will all be together in a large coop and allowed out during the day to free range in a 100' x 200' area. I plan on getting about 50 new pullets, and thought of getting 3 purebred cockerels. How many roos can I have in the same pen without causing problems? I know most likely, they will spar from time to time, but I don't want a blood bath! I have about 30 laying hens right now, but got rid of my last roo two years ago, as he was people aggressive. Thoughts, please! Thanks much!