Thanks!

We currently have the flock separated into four pens: one group of three (the biggest bullies, including the alpha), another group of three (sisters who basically get along with each other), one hen who has to live on her own because she was being bullied so badly no one would let her eat, and the remaining five.
We're trying to integrate the solo hen with the three sisters. First we put them together in a fifth pen that was neutral ground for a few hours every day, where they were just separated by hardware cloth. There was some posturing and stink eye at first but that eventually subsided.
Next we built a little sub-pen for her inside the three sisters' pen. They had been living next to each other in separate pens, but now the solo hen is inside their pen with a hardware cloth divider. We also put in a single roost so they all roost together at night (separated by the hardware cloth). Their food and water dishes are next to each other on opposite sides of the hardware cloth so they eat and drink together, too.
The solo hen was miserable on her own and I'm really hoping the three sisters will eventually accept her. She's much happier being inside their pen and especially roosting with them at night. So far everyone seems to get along.
We are building yet
another large coop/run. This will be neutral ground for everyone with brand new roosts, feeders & waterers, and toys. I want to eventually integrate the solo hen and three sisters with the other five, combining them into one flock of nine in this new run.
Then I want to reintroduce each of the three remaining bullies, one at a time, like you would a new hen. I'm hoping they will have lost their rank by then and will be able to get along with the others.
We're in a rush to get the new coop/run built and everyone back together before the heat returns in March. It would sure be a lot easier just having a rooster manage things!