I was thinking on how to lay out some of the pens I want and I suddenly thought about the space under the ramp and deck off the back door. Would that work as a run for chickens or quail? Would I gravel it? The system I am thinking of setting up is based on a recent article in Mother Earth News about using tunnel cages to use your chickens to work around a raised bed system and when the vegetables are spent in an area, pop a cage over it and connect it to the tunnel cage and let them work it over. Suddenly I saw the wasted space under the ramp and small deck as bird tunnels.