I recently added a FROG (For Roosters Only Grotto) or as I refer to it, a Roo-Cave for my three roosters to live in. I let them free range in the daytime, but the hens stay in the run. I have a small flock and when I initially got my chickens, I thought I had 6 hens. Then one day, there was a crow. A few days layter there was another crow with a different sound. I had two roosters. I left them in with the girls and all was weel till everyone got a little older. My dominate roo (a BO) was mating with the hens and the girls didn't mind, but whe the other roo (a RIR) wanted to mate the answer was NO! He was very frustrated and became too aggressive, so both boys were moved out of the coop. A couple weeks later there was another crow again with a slightly different sound. I was feeding the chickens before leaving for work and the my other RIR crowed right in front of me. He was out of the coop tat day. The other boys established his third place position in the pecking order and again all is well. I got four more blacl Orpingtons and now have 9 hens and 3 roosters. One rooster in woth the girls would probably be good, three is not, but the separation means we can keep all the chcikens peacefully.