Out of the brooder and in the coop for two nites now (4.5 weeks old). Not sure about the first night, but the second night they slept all together on their roost--which is about 3 feet high. Of course, it is 6 feet long and they only used 1 foot of space (six of them smooshed together). I know this because I hung a night light for them (obviously not necessary--they were already up on the roost sleeping when I put the light in!) I assumed they would sleep huddled on the floor for a while. They are so mature. LOL Their first venture into the coop they immediately went onto the roost. I was so surprised!