I have 12 laying hens. One of them went broody. So I got her fertilized eggs to sit on. She hatched out 5 chicks. They are so darn cute. Two months go by and then one of my australorps starts getting broody. I would chase her off of the nest and she would be ticked. She would get her hackles up and then I noticed her going after one of the babies. I took a good look at the babies and noticed some feathers missing up their backs. One of the babies was missing feathers and skin! It was disgusting. She was getting gange green around the area that was getting eatin/bitten up. I took the australorp out of the coop and put her in the portable run. The baby I brought in the house and ran her under warm water 3 to 5 times per day, then cleaned out her wound with perioxide. When it started to heal up used vaseline on it. She was in the house a good 4 weeks. I wanted to wait until her feathers came in before I put her back out in the coop. As of today she is doing just fine out in the coop. Up at the coop I noticed some of the chickens were getting their tail feathers bit off. I saw a culprit or two. I removed them and put them in the portable run with the australorp. The Australorp was not broody anymore so we thought lets see how she does in the coop. She did pretty good. The other culprits went back in one at a time to see how they did. And they did just fine. The last one, Ruby was put in the coop. The others pecked at her a minute and then on they went. A few days went by and all was fine. She was the top dog for 2 years so I figured of all the chickens who were put back in there Ruby wouldnt have any problems. Today I went up there and she has a huge hole in her head. I mean huge! It is on the back of her head. The chickens (or maybe it was just one) had pecked her so much that her round head has an indent. In the indent was a pool of coagulated blood. I do not know what to do. I put her under the faucet with warm water, and peroxide. I have her in the portable run because I can not bring her in the house. I do not know who has done this. It is so disgusting! Her head looks painful but she doesnt seem like she is in pain. I was wondering if I should put something else on it? Also what do I do about the cannibalism? do you think the one who has pecked Ruby will move on to another chicken and eat them also?