I have a 1 year old flock of 5 chickens. There pecking order is like this (Highest-lowest): standard Production Red hen, OEG Bantam roo, standard EE hen, bantam Cochin hen, and a Jap. bantam hen. I have a 14 week old Buff Orpington hen and a RIR hen. The 2 hens are in a pen that is in the sun all day, so I decided to just put them in with the adults today since they are almost twice the size of my adult bantams. I heard them squaking after they had been in together for about 2 hours. I went out to their pen to find my Production Red hen jumping at the Buff Orpington, like a rooster, and pulling out big wads of feathers. The RIR hen was terrified, and had her head shoved between the nest box and the wall and the rooster was pulling feathers out of her bottom. I ''rescued'' them and returned them to their old cage. I know I probably shouldn't have done this, but I didn't think they would be THIS mean. How will they ever get along? I guess I could wait until they are full grown. Ugh, what should I do so they will get along? Thanks ahead of time for any suggestions!