I'm having the same problem with one of my Silkies sleeping in the nesting box. I finally get my two teenage pullets to sleep on the roost not the floor of the coop, now I have to deal with the Silkie. She and her sister Silkie have never slept on the roosts so I can't just distract her by putting her on there at night. And I can't block the nesting boxes indefinitely because I have 3 big girls who lay in the box during the day. I have been trying to block them at night and run out early and remove the board, but it's not working out. I either forget or not get there quick enough. Anything short of something automated on a timer to open and close, I think I'm out of options! Any suggestions?