I've spent countless of hours doing so many readings about hen who has problem with laying thin shell or no shell eggs. I do everything as recommended for the past 3+ months and she is still not doing better, at all! These are the things I do for her at this point: 1/ provide oyster shell 24/7 in an area where she cannot miss seeing it, 2/ i use a coffee grinder and ground calcium tablets and Tumbs tablet to mix in with ACV water to give them - I use approximately 1 tsp. of calcium tablets + 2 Tbsp. of ACV, and mix them into a 1 gallon jug of fresh water, 3/ I am currently feeding them with Purina layer, 4/ They are able to free range for about 4-5 hours/ day on weekdays and almost 8 hours on weekends, 5/ I do give them organic, non fat yogurt every few days as treats, 6/ my other treats including "Craisins", green lettuce, wheat bread, cheese, and for the past few weeks, they have been happily eating june bugs at night before their bedtime. What am I doing wrong? I have 3 chickens; 2 BO and 1 RIR and out of 3 hens, one BO has been laying thin shell/ no shell egg for 3+ months. Please, please help!! She's been developing the habit of crushing/ pecking her thin shell egg and eats them. She's laying almost everyday and I'm at a point where I'm truly afraid she will not last too long if this continues on! I really appreciate your insights! thank you.