Im going to put her back in with the flock when she scabs over. If I were to leave her in with the others before, the risk would have been that the other girls would start picking at the bloody spots on her back, and it would have caused even more problems.
I have the mean hen seperated already. Today will be day three that she has been out of the flock.
@ScottyChic I worried about that happening... Another hen stepping into her shoes. I'll have to see how she behaves in a week or two when I put her back into the flock. If the behavior continues I'll keep her seperated until their coop is built.
I'll be building a chicken tractor, and I plan on moving it around the yard often, so that they won't get bored nearly as easily as they would in a permanent structure coop. Hopefully that will help with the bullying.
Thanks for all of the advice and pointers everyone!
-Ashley