All of my girls , pullets and hens, lay nice eggs with very hard shells except for one of my nearly 2 yr old RIR hens. She lays jumbo eggs 6 days a week. In the past few months her eggs have been pale and fairly brittle. Last week and this week one has broken in the nest. They all get layer pellets, free choice oyster shells & grit, scratch, oats, unshelled sunflower seeds, baled alfalfa, vegies from the garden, and they free range. Just wondering if anyone else has experienced this, or knows why.....