A friend of my father lives out in the country and is starting to have some issues with coyotes and foxes trying to get to his small dogs or just coming up into his yard or porch. He called and asked if I knew anything about predator calls...which I don't...but I told him I would ask the brain trust here on the Refuge. He is looking for the best bang for the buck so to speak. He wants something that will call in coyotes but also crows, foxes, etc. What are your suggestions?