Check out the "oyster shells" you're feeding ... Some are mixed/combined with sea shells, limestone and/or coral. I was buying Crushed Oyster Shells, then learned there was a "shortage" due (production) to Covid. Here in Hawaii, it's all "mixed" but I found some on Amazon as well as the "flour" which I now purchase ... Hopefully production improves & able to purchase at feed stores soonHi- Thanks for the suggestions. I started feeding the three new girls a calcium calcium pills with vitamin D added since last Sunday (one pill each night). That was enough to boost all three to lay eggs with hard shells- at first. I discovered that my green egg layer laid two soft eggs in the coop overnight, every other day. I am going to continue the suppliment for all of them until Sunday and then decide rather to continue the suppliment for an additional week for my green egg layer to make sure she’s got a fully charged shell gland. Hopefully she will be good after that. I have additional calcium powder that I mix into the soaked grains they eat and they have access to oyster shell and crushed egg shells in many places where they hang out. I also forgot to mention that my flock gets Black Soldier Fly larvae which is high in calcium. They all have access at night before they go to bed.
