Oh, thank you so much, I didn't think of that. I won't dose her with calcium, but may try a higher protein feed while they are molting.
That brings up another question: Can they keep themselves warm while molting? None of them have bare patches yet, but there is a ton of feathers everywhere, every morning. And whenever I touch one of them dozens of feathers come off in my arms. I have been fastidiously removing them, thinking they might have mites or dirt, But should I allow them to pile up in the place where they sleep to keep it warmer. (like in Beatrice Potter, there was a whole room full of feathers in Jemima Puddleduck (the silly bird who wanted to sit on her own eggs instead of letting the farmer give them to the hens to hatch...so she went with Mr. Fox to his farm with the room full of feathers?). Spoiler alert, she survived, but none of her eggs did. Or should I pile some clean bedding in there? They don't sleep on the floor, they sleep on a roost 6 inches above it. There is a rug on the floor to make the poop easier to remove in the morning. I shut the door so their aren't any drafts in there. Should I put the heat plate I used when they were babies back in there? How are they going to stay warm without feathers? And how long is this going to last. Today is day 2.