FYI: I built it and it was cool; especially good for taking vacations without worry, but I eventually realized I was feeding all the neighborhood rodents too. Now I just set a food bowl out during the day and lock it up during the night :)
UPDATE: Week Two: The flock is making great progress - I can clearly see patches where grass is all but gone. They are going to be so bummed when they learn that after this demo work - no more backyard trips. :) But I may be done with the Mulching Bin project - which I expect their help with...