My chikc is 4 weeks old, and we just moved into coup, out of garage. She had this open sore on her neck, I am not sure if the others are pecking her, but I watch and never see it. I took picturs, but am not sure how to post them. These are my first chickens so I am really at a loss on what to do. My book said to clean with hydo proxide, and I have done that 2x, but it looks like it is getting bigger.