My son just got some peachicks a few days ago, and today he noticed that one of them has an injury on its back, just under the right wing. The wing is not injured, but the skin over the back / side of the bird is cut open, creating a good 2 or 3 inch-long gap that exposes the muscle underneath. There is no blood at all, just some wetness resulting from seeping fluids. We have no idea how this injury occured, but there was a minor incident yesterday in which the dog knocked the cage lid off the brooding pen. Some of the chicks had scattered a bit and fluttered around before we got them back inside the safety of the makeshift brooding box. After talking to an avian rehab guy I know, he thinks the chick may have exerted itself trying to fly and the tissue was too thin, causing it to rip or tear. The chick continued to behave normally, and no injury was apparent until this afternoon. I have disinfected the area with a weak hydrogen peroxide solution, and am planning to put some stitches in an effort to hold the skin closed while it heals. I have sent my mom out for some supplies: betadine (providine iodine), small sewing needles, and thread. It would be great to have actual surgical thread, but the regular stuff will have to suffice. I'll post again after the procedure is complete.