Keep him in for now and definitely start him on the added nutrition mentioned above. My roo (as well as his hen friends) do very well on a game bird maintenance crumble as the mainstay of their diet (with oyster shell always available for the girls). They get ample amounts of bird seed mixtures that are heavy on black oil sunflower seed. Your roo needs these things right away. The corn is not cutting it at all. He is failing to thrive from malnutrition. If you can, also get him some mealworms to help build his strength (places like Petco usually carry, as do some bait shops).
My roo BJ is about 9 years old now - these foods have served him well.
Hoping your roo will feel better soon.
JJ
My roo BJ is about 9 years old now - these foods have served him well.
Hoping your roo will feel better soon.
JJ