I have a Black Sex Link who I suspect to be the layer of the "brittle" eggs I've been finding of late. The eggs are fully formed, have a 'normal' shell, but I think she's stepping on and breaking them as she leaves the nest. I do keep oyster shell out. I have 3 of these hens, and the shells of their eggs have always been thinner/weaker than the others. I went down to check on everybody just a short time ago, and found this on the 'boardwalk' in front of the nest boxes. The outside of it appears to be an immature shell, and the inside looks similar to the pictures I've seen of immature eggs. It's soft and moist. If this is an example of an immature egg, what are the causes? Thanks for giving this some thought.