Just build a decent coop from the start to keep chicken safe at night, and let the foxes roam freely the planet eating as much mice, voles and rats as they can

Just build a decent coop from the start to keep chicken safe at night, and let the foxes roam freely the planet eating as much mice, voles and rats as they can catch. They love that job. Ms yellowkitty will develop quick the sense to keep away from its path, or show their nails, or climb a tree.