Drunken Cockerall

One of our Kraut cockerels seems to have developed a balance problem  and totters about like someone who has had a bit too much to drink and ends up on his face or back quite frequently. You can always tell when this has happened because his little band of loyal hens are gathered round him trying to get him up... we stand him back on his feet and off he goes doing cockerel things in an exceedingly drunken fashion.

Anyway he has no injuries, is eating normally (even when he ends up face down in the dish) and is showing no signs of distress. Anyone any clue what is wrong with him?

Could this be an inner ear problem

He looks fine, eats normally despite the tendency to nose dive into his food and the problem seems to be slowly curing itself.

I think the problem is slowly curing itself.