The problem is often buyers who are ignorant of incubation or fertilization and the influence that rough handling has on those fertile eggs. An egg can be fertile and never begin development--this buyer obviously does not know this or chooses to ignore it and hopes to get something for nothing.
You can tell if an undeveloped egg was fertilized with reasonable certainty after incubating, but it's quite difficult as the yolk becomes very "loose" and unstable if incubated for awhile. If you manage to lay that yolk in a bowl and examine it, which requires tapping around the circumference with a knife rather than tapping the egg on the counter, often the bullseye is quite apparent, even if it did not even begin to develop that you can discern with the naked eye. I know this for a fact and it was illustrated by the incompatibility of my Light Brahma hen and Blue Orp rooster. Her eggs were fertilized--cracked open numerous ones after person after person never had hers develop. I even incubated several batches of her eggs, five each time, and not one developed though she was mated often and the yolk showed definite fertility. Chemistry wasn't right or whatever.
Physical distance has little to do with shipped eggs--it's how fast that egg arrives at its destination and how roughly it was handled along the way. I have had many California folks have wonderful luck with my eggs shipped from GA, as long as they arrived in the two to three day period they should have. If they took 4 days or longer, they were handled more and didn't do as well. I've had eggs shipped in-state take three days to arrive and they didn't do as well as the ones that arrived overnight as they should have at that distance.
You can tell if an undeveloped egg was fertilized with reasonable certainty after incubating, but it's quite difficult as the yolk becomes very "loose" and unstable if incubated for awhile. If you manage to lay that yolk in a bowl and examine it, which requires tapping around the circumference with a knife rather than tapping the egg on the counter, often the bullseye is quite apparent, even if it did not even begin to develop that you can discern with the naked eye. I know this for a fact and it was illustrated by the incompatibility of my Light Brahma hen and Blue Orp rooster. Her eggs were fertilized--cracked open numerous ones after person after person never had hers develop. I even incubated several batches of her eggs, five each time, and not one developed though she was mated often and the yolk showed definite fertility. Chemistry wasn't right or whatever.
Physical distance has little to do with shipped eggs--it's how fast that egg arrives at its destination and how roughly it was handled along the way. I have had many California folks have wonderful luck with my eggs shipped from GA, as long as they arrived in the two to three day period they should have. If they took 4 days or longer, they were handled more and didn't do as well. I've had eggs shipped in-state take three days to arrive and they didn't do as well as the ones that arrived overnight as they should have at that distance.