I have a pullet that started laying on Tuesday (3 days ago). Tuesday she laid a beautiful egg in the nest box, Wednesday she laid a beautiful egg in the nest box, No egg on Thursday and today she laid a soft shell egg from the roost. I have free choice oyster in the run for her to eat and have seen her take some and I have fake eggs in the nesting box. What would cause her to lay a soft shell egg from the roost today when she has been laying hardshells in the nest box? Is this just her body getting used to what it is supposed to do? Any help would be appreciated.