My sister ordered 4 ducklings for me. The tracking shows they were received by USPS at 4p.m. on the 10th, they were scheduled to be delivered today, but there's been a delay and there still not here. I am hoping my post office will be calling first thing in the morning telling me they've arrived. If they arrive in the morning, after having been in the box for at least 53 hours, should I expect any of them to be alive?