Oh. I'm so sorry about him not feeling very good! He sounds well loved and cared for especially since he is an older age.
Have you thought of maybe putting him in a smaller cage for now? Next to his friends? Or maybe a favorite buddy in there with him? You have my thoughts in this tough time.
Have you thought of maybe putting him in a smaller cage for now? Next to his friends? Or maybe a favorite buddy in there with him? You have my thoughts in this tough time.