This a.m. one of my black stars was being particularly mean to my smallest EE, so I pulled the black star out of the run so she could hang out with 2 hens that regularly fly over my 6' fence when they want. I went into the house for like 10 minutes then came back out to do a little work. the 3 girls were right outside the run exactly where they were when I left them, all doing their regular chicken things. I picked up the black star and ran my hand down her head to her back ond noticed a little blood on my hand so I started checking her over and found a huge chunck of skin missing from the back of her neck! she wasn't bleeding very much at all, and whats really weird is that hardly any feathers looked out of place when I picked her up. I searched inside and out of the coop & run, no feathers, no trace of blood, and for the 10 minutes that I was inside there was no noise from the chickens at all and they are very easy to hear from my house when the alarm is raised as they are only 50 ft away. She is not in shock, eating and drinking well, acting perfectly normal like nothing is wrong, doesn't seem to be in pain at all. I washed her wound with saline and tried to sew it up, but there is not enough skin to close the wound. Will this skin grow back on its own? I would hate to have to cull her, but if it won't grow back I guess I won't have a choice.