We "saved" an 8-week old Polish bantam roo who was getting picked on by our neighbors flock. He came to us 2 months ago with a bloodied head. Head has healed now but he frequently has fits of flopping around, rolling his neck, and squawking pitifully. After researching, I'm pretty sure he has brain damage. I feel so sorry for him and fear he'll never be well enough to introduce him to my existing flock. Any suggestions?