One of my hens has laid soft shelled eggs for the past 3 days and another hen was egg bound with a soft shell egg last night. I am confused as to why I am having this problem since I have 2 separate dishes full of oyster shell for them to pick from. I feed them Layena Layer pellets, probiotics and vitamins in there water that is cleaned daily, free range in there run all day (with lots of grass and a covered run to get out of sun). I don't know what else to do to give them more calcium. Sometimes I will give them egg shell but this isn't an everyday occurrence. Any suggestions would be greatly appreciated! Thanks!