I raised some buff Orpington pullets they are over 5 months old I give my daughter 4 she already had 2 hens about 1 1/2 years old. I took them at night off roost and put them in her coop on the roost. I was told this would work. Its been over a week now and at first there was a lot of picking on one of the pullets. That seems to be better now but the pullets won't go out in run with older hens and when older hens are in the coop with pullets,pullets won't come down off roost to eat and older hens won't let them in nest boxes so they have to want till alone in coop to lay or lay on floor. Will they settle down soon? It is causing slow down on pullets laying.
I have been there done that with some hens being aggressive and not letting others eat. I sold them as I got frustrated. I hope your situation calms down. (You might think about adding a second feeder if you haven't already.)
It's the 'pecking order', and yes they will eventually work things out. Multiple food and water sites are a great idea.
