I am unsure why my hens are all gong into one nesting box. I feel they may smoother each other. I made a box for them on the floor & they have gone up higher. There are 3 boxes up higher. They do not use their roost. They seem scared. It is 60-70 degrees here at night & I am not using the heat lamp anymore. Could they be cold? There are 8 of them? Thank you very much. These are backyard chickens. They have a nice big walk-in hen house & their own yard about 10x20 feet. I love these girls.