There are 4 "forms" of Marek's. The one that affects the eyes is called Ocular form.Yes, its the same rooster....would I know if his leg was sprained or broken by heat in the leg or swelling? I was reading up on Marek's and his eyes have no grey look to them, not sure if that's a symptom that's always present with that disease? I will definitely video him! I'm his only hope for a home I think. He is not a free range chicken, he gets supervised free time on nice days though. He was dropped off in our woods 3 years ago. I'm assuming because of his aggression. Is mereks deadly?
Marek's can affect the eyes, nervous system, skin and internal organs.
The balance issues are a bit concerning, but if he's been clumsy for a long time, then that may just be the way he is - since he was dumped over 3 yrs ago.
Sometimes a break/sprain can be hard to tell, but yes...check for heat, swelling, etc in his legs. Chickens are warm (at least to me) so you would want to compare the good leg to the bad.