Chickens are pros at finding whatever it is that pray they don't find. When we insulated our coop, we used styrofoam sheets wrapped in foil. We even duct taped the ends so the white of the styrofoam wouldn't show. The little brats peeled off the foil and the tape and feasted on the innards. We got new panels and triple taped literally every centimeter of the foil wrap and ends. The next morning, we opened the coop door to find that they'd somehow peeled off the tape and eaten more! We tried again to secure the panels, but they outsmarted us a third time. Finally, we put wood paneling up over the insulation. I wish I'd read this article before we insulated the coop. I never dreamed chickens would see styrofoam as a delicacy!