One of my hens has been laying everyday and we have been able to pick up the eggs. Recently (last 2 days) the eggs have been destroyed before we even get out there to pick them up and there is no sign of an eggshell unless they are eating the eggshells. I'm told or given the advice that we might need to give them more calcium. My husband has also "researched" that we shouldn't be giving them eggshells...... a whole bunch people have told us that its a good idea to give them eggshells. Ugh. Help!!!