Hi everyone. My "Bigboy" wouldn't fly down from his nest and greet me this morning. He was fine yesterday. He is a bit weak and not flying around in his coop as he always does. I reached up and set him down where his food and water is and he wouldn't eat as he always did. I'm very concerned. I hand raised him 4 years ago. Is this the end of our journey ? I am saddened. Should I get a light bulb for some heat ? What can I do. He was a solitary pet.