Bill Roberts wrote: A Wainscoat of 1/4" square wire was added 3" high to discourage chicken neck intrusion. James Newton asked: So the birds did some weeding? (outside the wainscoting?) Bill Roberts replied: Wow!, I never thought of it,but come to think of it, there was never any grass growing where I Had put Scratch feed for the birds. You are probably on to something. Try seeding the problem "Grass" areas with Scratch and see who wins. I really wan't to know the outcome. Part of what you are trying is to find symbiotic helpers. this might be one of those problem solvers.
Results of the trial to come...