I rescued this Dom pullet over a year ago & put her with 10 red hens & 1 red roo. It was a very trying time for her. She struggled through everyone except the roo picking on her. They never hurt her just chased her & pecked her.She's never ever shown aggression to any of them. Well, she has always been on the bottom. I had to take one girl from the flock who was pecked badly by the others no blood just no feathers. I isolated her till her feathers came back. The other day I finally said today she's going back with the flock. They were ranging & I let her out. I supervised so no one would get hurt. The Dom actually attacked her I couldn't believe my eyes. I thought wow she's finally off the bottom & can strut around like hey I'm someone now. They all settled down & are getting along. Chicken drama is something else.