I have a sweetheart of a hen, Poppy, who recently has fallen into laying dangerously poor quality eggs. Her very first egg (back in August 2009??) was perfect. Then for months she was a very consistent layer. However, eventually her eggs started looking deformed. We called them 'dinosaur eggs' because they were oval shape and had many ridges. I noticed also that the thickness of the shell was decreasing, as well. It's gotten so bad now that the eggs break almost instantly because the shell is so thin, or there is no shell at all (a 'soft egg'). I know calcium is an important part. But all my hens are provided with oyster shell 24 hrs a day. And none of my other hens (I have 7 all together) have this problem. So either it is a calcium deficiency because she choses not to eat the oyster shell or there is some other problem. The strange thing is that, like I said, she used to lay normal eggs. I would have thought if this was a genetic defect it would have been a problem from the start. Some extra details that may help: She is a naked-neck (turken), Hatched April 8, 2009. I did not hatch her myself, rather bought her from a feed store, along with 4 other chicks (2 welsummers, 1 RIR, 1 sicilian buttercup). She started laying in August 2009 which to me seemed REALLY early--only 4 months old--and she was the first of the group to start. But I was feeding them chick/starter feed and I wasn't trying to induce early laying. At the onset of laying, I started feeding layer crumble. Then added oyster shell shortly thereafter. Her current diet consist of layer crumble (available throughout the day) and scratch (cracked corn, etc.) tossed out in the morning. I also feed her snacks mid-day or afternoon, usually fruit (apple, pear, banana, ...) or leafy vegetables (lettuce, spinach). Like I said, access to oyster shell all day. Fresh water is available in multiple locations throughout the yard. She free ranges and is very content. She is not stressed. (In fact, she's the top of the peaking order.) Her behavior is great, and she is not acting sick. Her poop looks normal. I could care less if I get any more eggs from her. She is my baby, not an 'egg machine.' I just want her to be well. Like I said, right now she seems fine, but I could see this turning south at a rapid pace (i.e. if her egg breaks inside!) Does anyone have any suggestions? Or have any ideas as to what is wrong? You input is greatly appreciated! Thanks.