After a few hours of quiet rest and food, the bird decided he wanted out of the cage. Maybe he had a run in with a cat or a hawk and was traumatized, requiring some time to get his bearings. So I took him outside and he promptly flew off into the Yaupon bush. My thoughts are that he would probably prefer to be outside, even if he meets his demise, rather than spend the rest of his days in a cage. I can relate.