I've got a rooster and 6 hens. Until this month only 2 of my hens were laying and I fed all-flock with, of course, oyster shell and egg shells available. Now I've got all 6 girls laying and, of course, my roo is in there chowing down too. They're still getting all-flock and they're going through the oyster shell and eggshells like crazy. I mean I'm refilling those cups almost daily! Time to switch to layer mix? Will my boy be fine with that? Interestingly, while I was adding feed today I saw him go into the oyster shell. Does an adult rooster also require calcium? Will calcium be counter productive for my ladies when they're not laying if they're fully formed adults? I forgot what the danger of calcium-loaded feed for young birds who are not yet laying but does that continue to be an issue when they're just off for the Winter or taking a temporary break?