I'm working on a experiment with eggs. Part of this thought process came to me because of seramas. Seems the smaller eggs may have more evaporation through the shell and if you take a container with a air pocket and shake it up (post office) the liquid sloshes everywhere, if the container is full then you get less sloshing (air cell detachment). So I though if you can keep the eggs from evaporating you may get less damage on the eggs during shipping. I have 2 clean eggs and 1 bloody pullet egg in baggies aging for a week. I started on Saturday this week and have had no noticeable evaporation of any of the wrapped eggs.
Saturday coming I will set the wrapped eggs and see how development goes. The bloody pullet egg was to check for contamination due to being wrapped in plastic. I can't explain this idea very well but in my head it works.
I'm about to rehome my breeding flock of sultans since I have some genetic issues which would be stupid of me to carry on when I'm trying to improve the breed, so I will not have eggs to do a guinea pig ship using my idea for at least 6 months. Anyone here interested in shipping me fresh eggs using plastic baggies so I can check this out? I'll pay for the eggs and shipping(4-6 eggs would be a good number). I have a thread started on the incubation hatching egg part of the forum with my experiment if anyone cares to read it and see how it works out.
https://www.backyardchickens.com/t/1155066/it-occurred-to-me-crazy-egg-idea#post_18126423