I have 5 yr olds and I bought 3 chicks in the spring to give me a nice variety of egg colors and now they are about to lay themselves and I added them into the big coop and the 5 are having none of it. When in the run they beat them up so bad they bleed and when up in the coop they stuff the 3 of them into one nesting box and keep watch so they can't eat or drink 
I really can't keep them in the small coop over winter, and I have no choices but to try and keep the big girls out so the little ones can eat and drink. It is tough because the big one need to lay too.
Will they work this out? I understand the pecking order thing, but they are being really brutal on these 3 chicks. Any advice?
thanks in advance

I really can't keep them in the small coop over winter, and I have no choices but to try and keep the big girls out so the little ones can eat and drink. It is tough because the big one need to lay too.
Will they work this out? I understand the pecking order thing, but they are being really brutal on these 3 chicks. Any advice?
thanks in advance