I have 3 barred rock. All normal layers well the 1 year old will sometimes lay an extra large but overall normal. Over the weekend, outside in the run on the ground was a tiny, tiny perfect egg. About the size of a large thumb nail!!! I am going to crack it open tonight and see if there is a yolk. It doesn't sound hollow. I'll let you know. I'll take a picture next to a quarter. if there is a yolk I'll take a picture of that too.