Last week whille we were in CA. My neighbor fed and watered the chickens, and even got a couple of eggs! Yesterday I got a phone call from her saying she wanted to give me one of the eggs back. "It won't crack! We dropped it on the floor and it still won't crack!" I was puzzled so we met over the back fence so she could give me this strange "uncrackable" egg. When she handed it to me I "cracked up"... It was one of the wooden eggs I had in the nest box to help show the new chickens were I wanted them to lay theiir eggs. I still laugh when I think of them trying to open that egg!