I let my chickens free range during the day (not a huge area, but it's pretty big); I ferment feed for many reasons, one is that the chickens don't waste of spill any and wild birds don't eat their food; I sprout grains and fodder; I buy their feed locally and it is cheap, though still the best quality around; and I consistently feed them table scraps!
This year I plan on trying grazing boxes and raising Black Soldier Fly larvae!
I keep my flock as small as possible, but I don't think it would actually classify as "small"