We are building a hoop coop/chicken tractor for our laying flock. It is on an 8 x 16 lumber base with cattle panels over top, heavily inspired by dozens of links, but most recently, this one: http://www.fhcrook.net/coppermine/thumbnails.php?album=7 My main concern is with leveling the roosts. Our three acre pasture is rolling and hilly, and rarely level. We will probably hang the feeder and waterer, so they will self-level. But will chickens roost on slanted boards? We'll be moving the hoop tractor every day or two, so it needs to be adjustable. I was thinking of attaching a couple of 2 x 4s to the cattle panels with fence staples on one end, and suspending the other end with chains or rope. Then we can adjust the roost height up or down to make it level. The roost will be a little swingy, however--will that bother chickens? Thanks for any help.