The roosters have integrated. One even gets a decent spot on the roost. I let the young ones have the run with the older hens for awhile. Just for just a moment I let the roosters in the run hoping the young ones had enough time and would dart back into the coop to get away from the scary hens. One imedietly grabbed a little by the neck feather. I literally pulled the rooster off by his neck feathers and he still wouldnt let go for a few seconds. I was rougher than I have ever been with both of them to keep them away from the littles. Lesson learned. There must be a fence between them.