Think I will try the ACV in the water. Today one of my hens was eating her egg, but I saw no shell. It doesn't seem she would of gobbled the shell that fast and then been eating the egg. So, I wondered if she laid it without a shell? I've found before that eggs had been eaten because of the residue left behind and figured the shell must of broke, but today was weird. She is 6 years old, barred rock. I feed layer crumbles and scratch, sometimes fruits, veggies, bread etc. Any ideas?