We used chickens to catch bugs. Mostly in the mountains it was ticks. Took no time at all for the chickens to take care of that then they kept the other bugs in check. The property slowly became more eco balanced. What are they not good for. Well they love the garden as much as the deer. So it was fence them out of the garden or stay with them and pin them up for the day. They had to be pinned up at night any ways to protect them from other predators. The chickens are also great for eggs. About once a week I would add flax seeds in the food. Made a difference in the size of the egg and yoke. Healthy chicken's healthy eggs. Drying out the egg shells and crumbling them into the chicken food also helped to have hard egg shells.