How long can day olds last in shipping?

[SQbrahmas]

The USPS had "gaureteed" the arival of a box of some 13 chicks from kentucky to arrive yesterday afternoon . I hope they are still alive and come today? Anybodies 2 cents?

 

[Sir Birdaholic]

The egg sac will be absorbed by them for the first 3 days, they need food & water by day 4, & day 5, Good luck.