I have 6 chicks roughly 2-3 m old. I came out yesterday to find one dead while the others were pecking at a wound on her behind. I had checked on them a few hours prior and they were all fine. Turns out her neck had been broken some how. So today I put them all back outside in the run. I come outside a few hours after and one was pecking at another one's behind where I noticed a wound. I immediately removed the injured chick and isolated her to prevent anything more. I am convinced that the other one was killed by her flock and it started with one chick. As I was temoving them individually from the run I noticed the pecker was eating feathers off the ground. I need some advice on how to deal with this possible cannibal chicken. I don't want to lose any more. Do I have to euthanize her or can she be made to stop?