I had a neighbors dog kill 3 of my chickens 3 days ago, and just noticed one of my girls injured only today! I need advice on what to do with her wound.... it's very large and goes all the way across her back. It looks like some of the feathers have grown into it and I don't know if I should disturb it and pull away or just try and treat it as is?? It's obviously started healing that's why I don't know how to properly care for it at this stage. Any advice would be helpful. I used hydrogen peroxode and neosporin-then took a picture. She's acting very good considering.