Hey all...I've recently built a coop, installed a nice/roomy/full o' hay "brooding box" (I guess that's what it's called), that is raised above the ground by cinder blocks (approx. 6in.)--yet my girls always roost at the highest point in the coop--which is not protected from the elements. How do get them to use the box? Eliminate the high point? Raise the "brooding box?"