I feed them a 20 percent layer pellet, I rotate them outside their pen with my other birds. The oyster shell is where they can get it when they want it. I have only had her a couple months. Thing is, I have 6 of them and I don't know which on it is yet, with out sperating them. all look fine, all have clean bottoms. I just get an egg like this just about every day. I give them shelled corn, and scratch as treats. The only thing I can figure is that she is just going to lay a weird egg. Which ever one it is, she has been laying an egg like this the whole time I have had her. So I wouldn't figure it is hiccups. They are not messed with, other than when I go out to take care of them. I just don't know.