I was thinking about getting some kind of tree to plant in the run for shade. I know I'd have to put some fencing around it at first to keep them from killing it. Anyone done this? Any suggestions for fast growing chicken-safe trees? Or a container tree would work too (then I wouldn't have to do all the work of digging or ask dh to dig for me. lol). Our run is covered so it would have to be a short tree or maybe some kind of tree-like shrub.