I used to let my chickens free range a good deal of the day but I redid a portion of my yard and they discovered they loved to dig it up. They lost the privelege to free range unless im out there supervising them and the weather hasnt been that good so I havent been working in the yard...which means they havent been out. One of my hens started laying soft shelled eggs and did so for a solid few months before I gave her back to my Aunt. Now one of my chickens that hasnt been laying long all of a sudden started laying soft shelled eggs and has been almost every day for the past week or two. I let them free range a good deal of the day yesterday and she laid a perfect egg today. Could it be related at all??? Maybe the grass has something in it they're not getting in there coop...or overall just happier??