Temperatures have been close to the mid-nineties here. I have two sets of shipped eggs coming in today/tomorrow. I'm wondering if it's been so hot that they could have started developing while riding around in a hot postal truck? The reason for concern is the prevailing philosophy that you should let shipped eggs sit for 24 hours before putting in incubator. If they had started to develop, and then I store them in a cool place for 24 hours, could I be killing the embryos? Anyone know the science behind allowing shipped eggs to sit for 24 hours? Should I still let them sit in a cool place, or just go ahead and put them in the bator? Or as a compromise, could I put them in the bator, but leave the egg turner OFF for the first 24 hours?