i recently madea chicken house from a modified wooden packing case, obviously a very large one you can get them from transport companies, knock the ends off and replace with panel which are shaped like the end of a house ie a square with a triangle on top. then add a double slopiing roof with a hinged setion for cleaning, a sliding door and detachable nesting boxes so you can take them off and sweep litter straight out, some split wood perches and yuor done clear as mud