- Step One Sharpen both ends of a 6-foot pole and drill a small hole near one end. Drive the other end into the ground until it is secure.
- Step Two Cut a 6-inch-long stick that will loosely fit into the hole. Tie a rock to a thin cord and pass the cord through the hole in the pole, then make a slip noose that drapes over the perch.
- Step Three Tie an overhand knot in the cord in back of the slip noose and place the stick against the hole. Tension should hold it in position. When a bird flies down and perches, it will displace the stick, the rock will fall, and its feet will be caught as the loop quickly slides through the hole.