VERY new to all this... Yesterday all was fine and this morning when going out to clean the coop we noticed a lot of blood. One of my girls was pecked nearly to death. She was walking around and alert but you could see straight down to her neck bone. My husband had to put her down, she surely would have died due to the injury but we are miffed now. I was crying like a baby. What do we do? We don't know who is bullying. I know there is a pecking order and they are about 16 weeks old. None seem overly aggressive other than the roosters, we know there are at least 2. They were all raised together and moved to the coop together. Any recommendations or just let nature run its course?