Chicken coops with dogloos for the nesting boxes. This is really cool. He put the dogloos on lazy susans ( that was a neat suprise) so they can be turned to the opening in the run for egg gathering. For nesting boxes be just cut one end out of igloo ice chests. That is an awesome set up using mostly recycled items. Lazy homesteader has the story and a video showing the dogloos in action.
