I have a 25 week old black Australorp. She was acting like she needed to lay an egg. She was not in a nesting box but in the corner of the run. My first thought was that she may be egg bound. When I was in the house getting gloves, warm water etc. she had laid the egg. It was a soft shelled egg. All my other hens that have just started laying, their eggs are fine. I leave out eggshells and oyster shells for them to eat at their convenience. Will she know to eat them if she needs more calcium? How can I get her to lay hard shelled eggs? She also acted very tired and rested a while after she laid the soft shelled egg but appears to be fine right now. Is that normal?