I have a few dogs who decided to gang up on my 1 yr old cockatiel today. I do not see any serious damage to him just looks like a few lost feathers. He is really shook up though. Very nervous and quiet, which is very unusual for him, but I'm sure to be expected at first. Do birds experience post traumatic stress and is there anything we can do to help him get over the experience? And wilI he ever go back to his normal behavior? I have been keeping the dogs away from his cage, but other than that I am not sure what else I can do and I feel terrible as he is loved so dearly.