I have never seen one of these though I have heard about them. A few days ago one of my hens laid a very thin shelled egg which broke and got half eaten before I found it. THen yesterday I found two eggs with just membrane and no shell at all. One was broken and the other was intact and they had both been laid in a different area of the coop, not the nesting boxes (so one may have been from the day before and I missed it). Is this a stress problem - someone being picked on? Or is it nutritional? Or just a hormonal wobble? They are on layena and get oystershell and DE... Not sure if I should post this elsewhere but thought this would be the best place to start anyway... THanks