Yeah, that's our thoughts, old age. He was a rescue and in terrible shape when we got him. Apparently fractured a foot sometime in his life, was only able to walk on his "forearms". He got around very well though balancing with his wings and beak. He had a coop all to himself, a nice run so he could socialize with the others with protection of the fence. Two days after we got him he preened himself up nicely and for the first time in over 1 year he started to crow. We laid indoor out door carpet on this floor for comfort with shavings on top. We would upgrade his nests once a week, he was unable to perch. He was pretty smart, at night when I walked by his run to close everyone up I'd say go night night Walter. I'd bed the horses goats etc and when I'd come back to close Walter he'd hobbled into his coop and onto his nest. We'll miss him.