My flock had dwindled, because of old age, down to two Bantam hens and one young LARGE rooster. Because he is so "energetic" and the poor hens are at a loss of feathers, I began searching for a couple larger hens. A young man sold me three black hens, no idea what they were. I kept them in the coop, separated, because our rooster did not like them. Thought with time he would. WRONG. Day 4 we let them free range. They stayed apart, but came back to roost two nights. Now they are gone. I caught a glimpse of them yesterday, but nothing since. Do chickens see color, because they did look a little like vultures. Should I try more ? The two Bantams raised this rooster and maybe he will always be too protective of them to accept new ladies?