I am working on a chicken tractor. This coop will be 4x4. This is a profile view of the house looking from the run. Please review and make comments. I will have a door in the back for access and the roof above the next box will be accessible. From what I have learned on this site, it is better to have the roost above the next box, and if possible, not above the door. Let me know if you see any problems with this design. Again, it will be 4 foot deep and the run will be 8 foot long.