Sally, I have been conducting my own "hands on" research and you can see it here... https://www.backyardchickens.com/t/738943/the-great-egg-shipping-experiment/170#post_10448849QUESTION to Egg Sellers
When you pack eggs for shipping do you suggest lay eggs on their sides or placed fat end up?
I am trying to figure out why most people DO NOT ship in the fat end up position because if you ship sideways that aircell will naturally do everything in its power to get centered in the egg and make for even more loose cells.... I have a few results from our byc experiment with taking an egg and shaking it until you dislodge the air cell and if you do the test you will find it takes ALOT and I mean ALOT, ARM TIRING LOT to get an aircell to roll even a little! HOWEVER the minor vibrations of the road I think and the way people pack eggs on sides is a main reason for dislodged air cells..... Trying to figure out what is best because broken eggs havent been a real issue with us, its air cells. When I am ready to ship I want to package the best I possibly can and if you know me you know I like to do my homework and research everything! LOL
I have shipped eggs (from Alabama) to California, Maine, and Montana. So far, the air cells have not been scrambled too bad (I shipped with the air cell up) and I have only had one egg arrive cracked. The first chicks from my shipped eggs should hatch this week, but so far they are developing well and I am optimistic that the hatch rates will be better than average. Y'all check it out and let me know what you think.