I have a hen who is laying tiny eggs. I've gotten 2 in the last 2 weeks. The first one was smaller than a robin egg and the one I have now is smaller than the eggs I get from my bantam hens. I'll try to take a picture and upload it. The first one didn't have a yolk or anything just the clear membrane in it. I'll open this egg and see what is in it. I might have to upload to my profile.