A dog caught my banty Roo (I had him out to give my girls a "break"). I thought for sure he was dead but he made his way back to the Coop. I've not let him in for fear of the others pecking his injuries- He has a red, raw area where the dog chewed on him and ripped out feathers along his back. He doesn't look well. I feel so awful for him!!! I've laid out some food and vitamin water for him, but he's pretty sedate and is hiding as best he can. What should I do for him???