I have 1 rooster and 18 hens. Two of my hens, both 2 years old, hide from my one year old rooster. The two hens will not come out of the coop if the rooster is anywhere around. If these two hens do come out, the rooster goes crazy and will run and attack them. He pulls their feathers on top of their heads, kinda of like mating, but really mean. He is great with the other Hens but not good with theses two hens. Is the problem with the hens or rooster? I want to keep the rooster, but I hate having the hens just sitting in the coop all day. What should I do? Should I sell those two hens and keep two of my 6 week old chicks?