They weren't roosting up until now, because they didn't have a proper perch/roost. The girls had been sleeping up on some selves with milk crates on top-they liked it OK. Last night I made them a proper roost/perch. It's a ladder style, probably four or five feet tall, with horizontal spots every 18 inches or so. I used 2x2s for the verticals and 1x2 for horizontals. Do I need to show them how to roost up for the night or will they figure it out themselves? They didn't figure it out tonight.