Hello there, I sell eggs to suppliers of local farmers markets. Recently I was asked if I had a rooster fertilizing my eggs. I stated yes, since roosters offer great protection in warning of dangers (since my hens are completely free range). Now, I know that you can eat fertilized eggs and never really know the difference as long as you collect eggs daily, which I do. However, the concern from my suppliers was that the customers were storing the eggs of the shelf of their non-refrigerated pantry and the embryos were developing enough to become noticeable. My question is: Can the fertilized eggs develop very small embryos after a few weeks of sitting on a room temperature pantry shelf? From my research, the eggs need to be at least 99 degrees F for anything to develop. Any personal experience or knowledge of the subject would be welcomed. Thanks!