My roo is currently having head tilt and disorientation problems, he's not lethargic as a mater of fact the disorientation seems to be making him cranky. He's also wiping his head alot, and scratching at the ear he has tilted toward the ground. I'm pretty sure its not wry neck since he gets unsalted roasted peanuts daily, which are rich in selenium, vit E and thiamin. It's not a neck injury, since he woke up with it yesterday morning and I'm pretty sure he didn't hurt himself during the night. He sleeps in a parrot cage next to my bed, if he had made enough commotion to hurt himself that badly I would have heard it.
It could be Mareks, but he's still got a healthy appetite, he's is drinking water, stool looks normal, breathing good, nasal passages clear, clear eyes. He did get in the shower with me the day before the head tilt problems, and we live on a catchment system (please read teaming with bacteria). So I'm treating for an ear infection with peroxide, I'm going to call around today and see about getting him in to see a vet.
Is there anything I'm missing? Other possibilities that I'm not aware of.
Many cases of wry neck or torticolis have nothing to do with a vitamin deficiency or a head injury, but can occur with quite a few diseases such as Mareks, avian leukosis, respiratory diseases, and anything that can inflame the lining of the brain or spinal cord. It's kind of a strange symptom, which may or may not go away with treatment. The vitamins you mentioned as well as limited stimulation and noise, and assistance with eating and drinking are the treatments.