My BSL started laying 3 days ago, each day she lays a nice brown egg, even though it is still small, but each day she has cracked the end of the egg. Looks almost like it fell on its end and is pushed in, now its not broken all the way to leaking though. Nice hard shell so that is not the problem. I have shavings and grass/hey in the nest boxes. She does move it all around her so that the egg when I check is laying on the wood section of the nest. I am guessing she is dropping the egg onto the wood, hence the cracked end. How do I fix this? SHould I use more shavings/hay, or get straw?