The subtle "drip, drip" of a dripper is a visual magnet to any bird. When they see the ripples across the surface of your birdbath, they are drawn to it and stay a while! Each dripper comes with our exclusive custom dripper valve that regulates the flow of water from your outdoor faucet or a recirculating pump. Just one drip per second, one pint of water per hour, turns your birdbath into an attractive gathering place for your feathered friends. Comes with 50’ of ¼” tubing, regulating valve, faucet fitting and a Y valve.