Budgie possible trauma from cat
Our healthy budgie that we've had for two years spent a week being babysit at a neighbor's house over Christmas. They have cats, and the baby sitter admitted that she let the budgie out once when she thought the cat was locked up; it wasn't, and it lunged at our bird. There was no physical injury that we could see. That's been eight weeks ago, and our budgie has never been right since. He constantly cries instead of chirping, increases his cries when we get close to him, and when we let him out this afternoon, he rolled around on the floor as if he was in dying throes. We thought that was it, but we put him back in his cage and he is back to normal. His eating and drinking are not off at all.
Can a budgie have nervous trauma and never recuperate? We had been considering buying another budgie for the cage in hopes that that would calm him down.
Any insights would be appreciated. Thank you!