I first heard about the pigeon pole on the bird-hunting blog Eight More Miles. It's a cheap and effective means to introduce your dog to birds and you can modify its construction and design to suit your needs and preferences. Its basic concept is simple: take a section of pole (and it can be made out of anything: PVC, wood, T-post, whatever) and screw an eyebolt into one end. Then take a thirty to forty-foot length of masonry line or nylon cord and tie snap swivels on either end. Snap one end into the pole's eyebolt and attach the other end to a three-way swivel with two, two-foot lengths of cord tied to it. Tie slipknots on the end of the two sections of cord, slip them over a bird's legs and tighten, then plant the bird and you're in business.