We have a mix of 18 month old chickens and 6 month old chickens. We have 16 chickens that were laying between 12 and 14 eggs a day. All of a sudden the chickens stopped laying. We had one or two eggs sporadically but for the most part they have stopped. That has been for the last 8 weeks. With winter coming we are wondering what to do. This has everyone baffled that we have asked. Please help.