Heated Plastic Bird Bath. This heated bird bath bowl features 150 watts of power and is thermostatically controlled. The bowl is 20" x 2" deep. The shape of the rim is designed to be easily grasped by a bird's talons making it a natural perch and, as a result, encourages landings. Includes adapter clamp for mounting to a variety of surfaces, stands or bases. Does not include a pedestal base or stand.