I'm been stressing about this problem for a good bit. I'm trying to use humor to get through it. I have done much reading and used many things to make them stop. Since I have seen many posts concerning it, I thought putting it all together might help others experiencing it. Adding more protein to the diet. I've been feeding duck and kitten food to increase my birds protein intake. So much that my chickens are talking about taking up body building. I gave the chickens salt water. Didn't make any difference. I read they could be bored. I gave them plenty of hay. Every day or two I give them more. Removing the victims & perpetrators. I have pet carriers with single chickens everywhere. The worst perps I haven't put back. As the victims get better, I toss them back to the wolves, I mean chickens. Used blue food coloring to dye their butts to decrease attention. I believe I could actually see the other hens laughing as I did it. However, each one quickly stopped after her's was blue too. One started walking like a penguin afterward. I could actually see the humiliation on her face. My Light Brahamas still have bright blue behinds. I sprayed hot sauce on their tails to try to stop the pecking. Other than shaking their heads, I didn't see much difference. I could just hear the hens cackling about who had the hottest @$$. We still had problems. Trimmed their beaks with my cordless dremel. That one more use I had never anticipated when I brought it. One added benefit was I think it also increased my chicken's self confidence. Since they all have beak jobs, they are the talk of the farm. They even seemed to actually enjoy the process. Maybe they knew I was making them prettier. They definitely have nice smiles. My latest attempt today was: 1. Giving them Styrofoam 2. Painting their butts with tractor grease. I did use the soy based version. Originally, I was a little alarmed that it was red since I read about chickens being attracted to blood. However, after thinking about... Maybe it would be best to associate really bad taste with red. I'm grasping at straws to try and reform my chickens. I would be selling the worse ones tomorrow but the weather is too bad. That's why I went ahead and used grease and Styrofoam today. If chicken soup is good for the soul, I'm about to make my soul real good! If anyone has any more suggestions, please let me know. I've turned my chickens into guinea pigs!