I have 6 hens over 1 year, all laying with no problems. There's also one baby, about 10 weeks. Yesterday, we found 2 eggs laid on the futon! One was normal, the other with no shell. We don't know who did it, and I don't know why my older girls would lay a shelless egg? It was normal size...kind of on the big side if anything. It's such a mystery! All have oyster shell on the side. I don't think the baby eats it. What do ya'll think?