My Rhode Island Red is 6 months old. She laid beautiful eggs for 8 weeks, one daily. About 8 days ago she stopped laying. I have not changed food, setting, or anything. Every day they get to free range in my active compost pile and get worms and veggies. My Red Sex Link is laying an egg every day and is just fine. I have added once a day a high protein treat. I have been adding crumble shells to their laying crumble all along. I need your help please.