I have not been able to get out to my chickens for a couple of days due to sickness and my husband had been going out and doing their feed and water. When I went out today I noticed one of my 5 month old Polish hens, trying to stay away from the others and that they were chasing her, she flew up onto my shoulder to get her treats and I noticed a smell coming from her. When I got her onto my arm I was shocked with what I found. I rushed her inside and she was given a soak in the sink so we could see what was going on with her. This is a picture after a bath and dry. What has happened? has she been pecked badly? She has a wound on her head as well. One of my 5 month old chickens has started laying and the first egg had a little blood on it. I have to wonder if she bled a little and the other girls attacked her for it? She is separated from them right now until we know what we should do. Please advise.