I usually get eggs from a neighbor and occasionally from a farm in the area. When supplies are low I will grab pick them up at my local chain grocery. The shell on this eggs run from hard to really hard. They always need a good whack to crack them.
Yesterday I picked up a dozen from Traders Joes. They are labeled Grade A, Omega 3, Cage Free, Extra Large. This AM I went to crack one as I always do and the shell practically disintegrated! The egg ended up all over the counter so I grabbed another and gently cracked it and the same thing almost happened. Looking at the it the shells they are they paper thin. I have never seen shells this thin. What would cause them to be so thin?