I had an issue and had to separate 2 of my 5 birds from the flock. My Brahma who has been separated for about a month is in good health and needs to be re-introduced. Every time I try and put her back with her sisters, they gang up on her. She tries to run away, they jump on her back and pull the feathers out of the back of her head. I left her alone with them for about 15 minutes and they had pecked at her comb and made it bleed. How can I make this re-introduction go smoothly??? I also will have to add my Rhoade Island Red back in with them as well...but that's a few weeks off still.