because they can eat almost everything, even if not bred in an industrial farm, you can let them roam free and they will live by eating insects or seeds they find around.
Some of my grandmas chicken used to eat the leftovers around pigs manger, but some of them became reckless and ate while pigs were eating and we started to find chickens with the heads chopped off, so we built a fence to keep chickens away from pigs food.
Some of my grandmas chicken used to eat the leftovers around pigs manger, but some of them became reckless and ate while pigs were eating and we started to find chickens with the heads chopped off, so we built a fence to keep chickens away from pigs food.