My other GCC died before we got Zoey (from a cat) and it is too late to perform a necropsy on her. would chlamydia cause sudden death? (Zoey died within two minutes of showing serious symptoms) and my bird has only come in contact with three of my friend's budgies once a few months ago. but she didn't have any symptoms of being sick and I have her out of her cage with me for a few hours every day. there is a possibility that I missed the signs before she got really bad. Her body did kinda seem a little underweight so I guess I just kinda missed the symptoms. This is a real wake-up call and I will have learned from my mistakes if I get a bird again and I will be paying close attention to weight and stools thank you so much for the infomation it has been really helpful and i will continue to do more research.