This afternoon when I went to check on my broody and her chicks, I found her dust-bathing in her nest of eggs. Thankfully no chicks were hurt, but one of the eggs is cracked pretty badly. I don't know if it's still alive, but I have it under a heat lamp. I don't have any way of adding humidity, though. I think it's around two to three weeks old. Here's a picture. Thank you in advance!