J.R. was an amazing escape artist. He has a large cage with a large hook lock, but no matter how many times we would lock the door, he would manuveur the lock and get out. I am wondering if he got out and flew somewhere in the house he shouldn't have, but there is nothing around that I can think of that would have made him get sick. there wasnt even as much as a pencil out in the open. So I dont think that was it. and ron, just give them fresh food and water, every day. he said they were acting fine. nothing out of the ordinary. my daughter also has 2 cockatiels that he was taking care of, and they are also fine.