I have a mean, bossy PR/RIR hen. She's been that way since she was little. She's definitely the top of the pecking order, but she's just hateful! Anyway, today I went out to the coop and she looks like she has been in a fight in several places. Her feathers are thin in places, and where her crop is, the appear to be broken off, not pulled out. I didn't see or hear anything happening and none of the others have anything wrong with them like this. I've never had one molt, and thought maybe this might be it (she's 9 months old, so i think she's too young maybe?) but with the broken ones I wonder if the others are finally tired of her hatefulness and they are ganging up on her. Do chickens do that? Or do they always stay within their pecking order if it's been established for this long? They've all been together since day one. I couldn't blame them if they did finally get her. She's needed it for a while. Funny thing is, she's not mean to humans. Just the opposite. She's only mean to the other hens. Not even the roos.