I have a young Call duck hen that just started laying last week. She has laid 5 eggs(usually every other day or so) and every one of them has been soft-shelled. I am feeding her Flockraiser and she has access to oyster shell. After the first couple of soft shells, I mixed some oyster shell in with the food to make sure she was getting it into her system. I feel so awful for her because I have seen her sit on the nest for a couple of hours trying to lay and once she finally does, poor baby is breathing hard and exhausted. Is this happening because this is her first laying season? I've just never seen it take this long for their shells to firm up. Anything else I can do to help her out? Thanks for any advice.