I got my chicks or pullets I guess (8wks old or so) from McMurray and love them already. I just checked on them and they are not roosting by in the shelter on the floor in a huddle. There are four of them. Guess they gotta get used to their new digs..
Hello and Welcome to BYC! Pretty little flock, they should enjoy their new home. It will take them awhile to get used to their new coop, chicks often will prefer to sleep on the floor until they get more comfortable sitting on a roost.
Your chicks are adorable.
They still look pretty young, so I wouldn't be too worried about them not sleeping on the roosts. Ours didn't start until they were older. (about three months-ish)
Actually our chickens enjoyed 'roosting' on the edge of a cardboard box when they were younger. It was kind of strange.