Fascinating to read the memories and reminiscences on old time chicken feeding! We are on Oklahoma prairie and forest but don’t do a lot of free ranging of chickens due to predators. We do free range our guineas. They have chick starter/grower always available but eat less than 1/5 of that in comparison to the chickens, so they mostly get their calories from forage. I’ve been surprised at what avid grazers they are, especially in winter. My DH is a nature enthusiast and he was afraid that the guineas would wipe out the small invertebrates etc that support our flock old bluebirds and other wildlife. The jury is still out on what exactly the guineas are eating, but we have more frogs on the ground than ever, and still plenty of grasshopper type insects in the prairie. I’ve seen the guineas glean grass often - I suspect that they mostly eat very small things... In contrast, when I let chickens out for supervised free range time, I’m seeing frogs, small snakes, and crayfish eaten.