My DH has been building our first coop. The dimensions are 8X8X4. On the narrow wall, opposite of the door which is open in the pic, the coop has a double paned sliding bathroom window installed vertically, above it is installed a vent and on the long wall we have hardware cloth screened plexiglass windows which can open and close from the outside. The nest boxes haven't been installed yet but will be accessable from the outside left wall. I have 10 LF chickens at the moment and will be adding more as we go along. Because this coop is SO tall, we're wondering if we could make it a two story coop? Not sure where the ladders would go or how this would affect the temperature of the coop with the chickens in a 4 ft tall area instead of an 8 ft tall area. We live in Idaho. The coop is raised off the ground on skids, with hardware cloth underneath a plywood floor which can be removed. Any ideas out there for increasing the number of chickens this coop can hold? Do any of you have two story coop?