Is there a reason to add a roost later and not before there are chicks? I have read here a few times about adding a roost in few days/weeks after getting chicks. I was thinking of using a piece of 2x6 upright on the floor. It would give them a 1 1/2 wide perch and 5 1/2 high off the floor. But I think it would be easier to screw it to the floor before there are chicks in there.