We have around 75 hens and two roosters. For about three weeks now we have only been getting a dz eggs or less from the girls. We give them laying crumbles, oyster shell, and have kept things as clean as possible. We are have a mouse and rat problem due to the fact that the farmers are in the fields and they are trying to find food.But the barn cats are taking care of that problem. We have talked to a family friend and he said that sometimes when the weather changes it really effects their laying. Any other suggestions? Yes we have been leaving a light on for at least 12 hrs. We 've never had egg production down this low before.