I’m so sorry. I would love on him and make him as comfortable as possible. Sadly, I agree he is likely on his way out. He may be overrun with mites due to some other weakness or illness. I see he is molting (pin feathers one his head) which makes them feel awful. Can you offer him a scrambled egg treat for protein? Were you able to gently palpate his abdomen to see if he’s leaking fluid internally?
If he’s cold, I agree, maybe forget the air. Hard to say, since at first you thought he had heat stroke. How warm is he in his wing pits?
If he’s cold, I agree, maybe forget the air. Hard to say, since at first you thought he had heat stroke. How warm is he in his wing pits?