I am new to actually keeping chickens (did FFA in high school but didn't get enough land unit I turned 30). From the start they are keep organically, I am a disabled Veteran so if my broken butt puts in the trouble to grow/raise something it's going to be the most natural and I believe healthiest. I feed them organic feed, DE in beeding and food,ACV in their water, and herbs and essential oils to treat/prevent issues. I want healthy natural food, not fake better for me food that the only thing different is that I grew it and applied XY and Z chemicals to it myself. I think people are just to scared to step out of the box that big corporations have told them is the only way to get results. Knowledge is power and if my ancestors could do it naturally without these products than why can't I.
Takes more land and greater on farm diversification to compensate for backing away from complete diets that have become the standard. Also many predator populations have enjoyed a rebound making a relaxed approach to free--range management not sustainable.