In listening to some of my other friends who have shipped birds and/or had birds shipped to them, I made a decision to never have birds shipped nor ship birds any later than Wednesday morning. If USPS stops delivering on Saturdays in the future then I would probably ship no later than Tuesday, preferably a Monday.
I got silkies shipped to me in WA from FL. They were shipped on Wednesday morning. The estimatied delivery was for Friday, they got here on Thursday around noon, in great shape.
I do think we have to be aware of the limitations and mistakes that can happen when shipping live animals. And Dragonlady is right, they will stop shipping live animals and eggs if we go after them every time something bad happens. Most of the time, they do a good job and birds make it just fine. It's just sad and frustrating when something bad happens to your "babies".
I for one don't want to have to fly somewhere across the country or anywhere that is just too long of a drive, to pick up birds. I do wish they would upgrade their tracking system more to the level of UPS. Just my humble opinion.