Hi, I'm sorry to be so slow in posting an update. I am heartbroken to announce that within moments of posting my original post, the bird died. It was so sudden. He went from being perfectly normal and healthy to being very sick within less than four hours, and then he was gone. A postmortum X ray showed that there was no egg, so that wasn't the problem. Autopsy results are pending, but the vet suspects it may have been kidney related. We are just shocked and devastated... we can't figure out what happened. If he had held in just a little longer we could have got him to a vet maybe... although the closest avian vet is a three hour drive from here.
Thanks for trying to help.