My Dom's live in a Chicken Tractor that I constructed with info from this site. They are 1 1/2 years old and had a great summer with an average of 4 eggs a day from 3 hens. During the summer they quit going to roost. They continue to go up into the nesting area to lay their eggs but they never go up at night. What could be the issue? I am worried about the cold weather. They just hunker down on the ground at night. Thanks for the help. I really enjoy this site and have visited it numerous times but never registered until yesterday.