This beauty's bowl is a heated and is enhanced with a lovely contoured pedestal. Expect to attract birds all winter long! The 150-watt, thermostatically controlled heating element is completely hidden beneath the surface of the bath and automatically cycles the water temperature between 40-50 degrees Fahrenheit when in use. Disconnect it in warmer months when temperatures are not a problem. The textured surface and contoured rim provide a secure gripping surface for birds to land safely. A gradual slope encourages birds to bathe in a bowl that's a generous 2 in. deep at its deepest point. This bird bath has been fully tested in sub-zero conditions. Cold temperatures will not crack this bath. The power cord and plugs remain shielded from the elements inside the hollow pedestal.