I'm new to the chicken seen. I bought 6 chicks 3 buffs 3 RIR'S. They are now almost 4 months old free ranging hens. I would like to introduce a rooster. I had someone tell me if your raising them for eggs don't do it. Well I am raising for eggs. So do I get a rooster? If so what breed and age would work? My coop is only big enough for 6 birds so a hen needs a new home. Should I rehome a buff or rir?