He's not regirgitating, he's throwing up right after getting dizzy from flying. After landing, what he will do is this, he staggers, bends his head back and is off balance. During this short time frame, he cannot sit on your finger, he falls off and just tries to hang onto anything. I cradle him and hold him still so he calms down. He then throws up. Is this due to a bacterial infection? neurological problem that will never go away? How does a vet determine the cause? Its too cold to bring him out in the cold to a vet, especially if its a bacterial infection. What should I do/try?