I am sorry if this is a long post: I have never gotten soft shelled eggs till about a week and a half ago. my hens are all about a year old they were eating 20% layer crumbles till about a week ago, the feed store was out so I had to get 16% laying crumbles(maybe this could be my problem?). They have a acre to free range, I have oystershell and grit out for them in a dog dish and they eat a good size bowl about everyweek, they have lots of clean water, food 24/7. I just wormed everyone about 2 weeks ago Ivomec, and dusted with DE and seven. They also had a round of antibotic PER the vet in the does he told me, I had a few hens I took in for sneezing he told me to give the meds and worm them. They also did a fecel float it came back fine. I have give them yogurt and oatmeal, trying to give them some good stuff back in there tummys. I can start keeping my eggs as of today. I am getting big nice eggs from most of my girls but I am finging a soft shelled egg or just york about everyday!! What is going on??