Fresh water is essential for birds, so keeping a fresh birdbath available throughout the winter helps to encourage more birds to visit and stick around your yard. This attractive bird bath includes a 75 watt heater built in, so the birdbath is ready for your birds to use year-round by simply tucking away the cord in warmer weather. Its innovative design allows for 3 different mounting options: deck, clamp, or ground. The dish is shallow, holding one quart of water and making it safe and attractive for birds. The bird bath heating element is thermostatically controlled to operate only when necessary, and has been tested down to -10 degrees Fahrenheit.