I have a chicken (I'm assuming it is the same chicken) laying eggs with very, very soft shells. I have actually been finding these eggs in the coop under the roost and I'm guessing she is laying them sometime during the night. I was getting these eggs on occasion but yesterday I found a "crushed" egg on the coop floor and then this morning I found another egg on the coop floor that was intact but was so soft I could barely pick it up. Again, I know that one of my red-sex linked is laying these eggs I just don't know which one (I have 2). All of my chickens have 24 hour access to organic feed, water and crushed egg shells for calcium (they refuse to eat oyster shells ). Any suggestions on what else I can/should be doing to fix this predicament?