Assuming night and the dark I would imagine they would be afraid to relocate unless its really well lit. I am a relative newbie tho, with 4 Cream Legbars at 10 weeks old.
Searched for this thread because of my own issues-
I have seen my chicks terrified of the dark. Initially they did not know...
Completed coop (well almost- just have 4 young chickens in it and need to figure out a more permanent water and feed system). Notice how the door to the run is elevated about 16 inches from the floor. We have 3 boston terriers and they would love to squeeze by our legs to get inside- that 16...