Balance issues in my chicken

[ButterBoo]

I've got a 5 month whiting roo I notice was having a hard time with walking. If he tries to walk he flips head over heals he can moves his legs and doesn't appear paralized. Poop is normal. Eats and drinks with vigor. Seems normal as can be. I've removed him from the flock and it's been 2 1/2 weeks now. I don't see any obvious signs of trauma. What can I do for him?

 

[nuthatched]

Sounds like vitamin deficiency, give him one 400i.u Vitamin E capsule and about 1/3 of a vitamin B complex tablet, every day for a few weeks.
What's his diet.