I am curious about when we can integrate our chicks with our 14-month-old laying hens. We have 15 hens and 15 chicks. The chicks were born on October 15th, and we have kept them separate in another building. When would it be considered 'safe' to put our babies in with our older hens? I am concerned about putting them together too early, especially during the winter, when they will be in closer quarters during the really cold days. Any advice will be most appreciated! Thanks so much!