One of the most useful applications of the idea of keeping the flock on a biologically active mixed debris field: What a great alternative to the usual static chicken run, denuded of the last blade of grass, and burdened with a heavy scattering of poops eager to run for natural water systems with the first rain. Keeping that run under a heavy organic cover is the best way to ensure responsible manure management, and to reclaim the nutrients in the manure for fertility applications in the garden and elsewhere.