We are considering the pros and cons of flock segregation by sex for the winter. Our problem is that when we take ½ of the flock out to the portable run for the day there is no problem. But when they come in it is a mating free for all, with 2 of the pullets bearing the brunt of the mating. We would only combine the selected roo and hen when we would want them to mate. If we do this how far should the other coop be away from the first. Currently they can see from one run to the other run, is this ok.