Re saving your egg--I have several of the very small eggs -"Wind eggs" I think they are called - that a hen sometimes lays when they are starting or stopping laying. About the size of a dime or nickel. They dried right up. However, I had a full sized egg that had wrinkles in the shell that I wanted to save, and laid it up, and apparently it rotted, and then it exploded, getting stinking egg all over the place, so I don't know if this is a normal happening, or if I was just unlucky. Thought I would warn you, tho, to lay it somewhere it won't make as much difference if it explodes.