HELP. My two chickens Margo and Ruby have been good friends for a long time. However just recently Margo who is a Silkie has started to be really mean to Ruby. She pecks at her and pushes her away from food etc. Ruby is becoming a bit scared of Margo. I must add that at the moment Margo is broody and I have to keep taking her out of the coop and closing it up otherwise she sits there all day. Is this normal behaviour for a broody lady as she has not been like this before. What can I do? Will she stop it and go back to being friendly Margo? I only have the two and they have a free run of our garden. PLEASE any advice would be gratefully received .