I have a 7 month old chicken that is lame in one leg. He attempts to put weight on it but limps badly. His toes are curled under most of the time and his foot is forward and outboard of a normal stride. I have isolated him for 3 days and given him egg whites, yogurt and a chicken supplement thinking he had B2 deficiencies. I also checked his leg for a slipped tendon, I’ve never seen a slipped tendon but both legs felt/looked the same. No visible wounds on his leg. He did react when I moved his leg or toes. Please help -thanks.