I really hate it that your birds have not arrived at their destination.... Please believe me that postal employees make every effort to deliver live animals as quickly as possible. I really wish that we would quit accepting live animals for delivery (except I wouldn't have gotten my silkie roo, Pepper, without it). I have worked for the postal service for over 21 years, and I grieve every time a story like this is posted. Not pointing fingers, because there is no need, but the number one cause of mis-sorted mail is an incorrect, or illegible zip, or incorrect elements in the address field. After that, it could be anything from missing a connection, or even original flight, to label getting damaged in transit. I am subscibing to this post, so please please let me know if they arrive alive. Have you called the buyer/receiver since 3:00 today to talk to them personally? It is possible that delivery was made, and the scan was missed, or not done until when carrier arrived back at their delivery unit.
I just read your next post. Were they at least over 6 oz. each?