Joel Salatin always talks about raising chickens on table scraps alone, but I can't find any literature to back it up. It makes sense that they would have historically filled this "recycler" niche, back when grain was too expensive to feed to animals, and layer pellets haven't been invented. But the literature all seems to say that your chickens will be scraggly and unhealthy if not supplemented with grain. My thinking is that they would probably be healthy if they could forage in the compost pile and get worms and bugs too, but maybe just produce less eggs. I'm going for a zero input system. Just wanted to see if anyone had experience with this before I tried it.