Last November I had a problem with my chickens pecking at one another. To the point of death. I thought then that I had too many for the space available, so I butchered a few. Everything was fine until last week. My wife went out to collect eggs and found blood, an hour later one was dead and two more had deep wounds around the vent. I butchered one of them and kept the other seperate. Last night I put her back with flock with no success and now they started to pick at another. Is this going to be a downward spiral? Any suggestions of what to do to stop this? When this happened in November I bought a block with corn, molasses and some minerals and they finished it a few weeks ago. I am feeding layer mash from a local feed mill with 17% protein. Thanks for any input you might have.