So, we collect eggs every day, and multiple times on weekends. I know (hopefully) all the secret places they lay, and SO FAR, we havent discovered any new nests with questionable egg age, nothing sits even overnight. So, my question is this... how long does it take for a fertile egg to get bloody and have development about the size of a pencil eraser in it? Because that is what I found in an egg yesterday as I was making Egg Bake.... but if I am collecting eggs every day and havent found any eggs with a questionable age, how could it be partially developed? DH asked if its possible that it was in the hen too long and started developing before she laid it?