I've had two orders of McMurray chicks this year. First order shipped on Saturday and arrived on Monday. ALL the Sumatras were either DOA or died shortly thereafter and I lost several of other breeds in the first few days. Remaining chicks are doing fine now. Second order shipped on a Sunday (but according to the paperwork hatched on a Saturday) and didn't arrive until Tuesday as Monday was a holiday and PO was closed. They all arrived just fine and happy.
I asked the rep at McMurray why they ship on weekends and she said they had a contract with USPS and were only guaranteed room on the planes on Saturdays but that the PO trucks still run on weekends, even if the offices aren't open. That said, I am still not happy about the babies being en route over a weekend as I'm sure they spend more time in less than ideal temperatures/handling situations. Although not a huge fan of Ideal's birds, they did get my order to me overnight and every single one of them are doing great so will probably order from them instead of MM from now on if they have the breeds I want. I know the hatcheries refund money for dead chicks but just hate the thought of them enduring so much in their short little lives and want healthy babies, not a refund!