we have roosting bars but not higher than nest boxes but some of them roost on top of nest boxes as it has a roof on inside a big shed tho,,,I will def try going and moving them thanks xHow old? Do they have roosting bars that are higher then the nesting boxes? Can they access the roosting bars, meaning are the bars too high? Every night you'll need to go out and, with as little light as possible, move every bird to the roosting bars and quickly shut the light off, they will not move once it's dark. I have one chicken that sleeps all by herself because the others are buttheads to her. On the nights that are really cold I sneak out there once it's completely dark and with a small flashlight move her to sleep with the rest. As long as I do it quickly there is no problem and she stays.