I have 11 hens (ISA Browns) that are about 10 weeks old. I just got 2 roosters (I believe are Leghorns) that are about 14 weeks old. A friend of mine had to get rid of them because of noise complaints from neighbors. Currently I have them in a separate cage than the rest of my flock, and even when I put the girls out in their run, I keep them in a separate cage butted up to their run. The girls have been interested and they'll poke their heads out enough to meet the roosters and the roosters will poke their heads out and peck at my girls. One of the 2 roosters is the dominate one, the other could really care less about my hens. I know that there will be some pecking as to create their pecking order, but my question is, how long do I need to keep them separated for? I know that where they came from was from a very clean environment and there are no parasites or diseases, so knowing that, what is a safe amount of time before I let the roosters in with the girls?