Today while I was outside with my babies i noticed one had a gaping neck wound on the back of her neck. I had to have noticed it seconds after it happened because there was hardly any bloood, zero dirt, etc. She never screamed or ran, I am thinking she had to have snagged herself on an exposed nail or something? The big chickens and duck were no where near her. The chick seemed oblivious and was just walking/pecking w/her sisters. I took her inside, cleaned it with a peroxide wash and then is when I noticed the extent. It is TORN skin so she has an open patch the size of a quarter. I have her separated from everyone else in a kennel with lots of straw and a light for heat. She is still eating/drinking like nothing is wrong. Is there anything else I should be doing?