I bought a heated bird bath about a decade ago, with a goal of attracting more birds to my yard in winter.
Wildlife, even during the cold season, prefer to drink water rather than eat snow to get fluids. Plus, I knew birds will bathe as long as the temperature is above freezing.
My first attempt at drawing more birds with a heated bird bath went awry because I went for an inexpensive model. Within a few days, the heating element in the tray burned out, and the water froze. I gave up and tossed out the unit.
A month ago, a friend loaned me a heated bird bath made by Allied Precision Industries. It was clearly better built. I made a stand for it out of treated 2-by-2s, and placed it near my back-yard bird feeders.
It took a few days for the local flocks to find the water, but now each day brings a variety of songbirds to drink.
It's fun to watch blue jays, black-capped chickadees, white-breasted nuthatches and other birds perched on the frosty edges of my serving dish and dipping their bills.
However, I didn't count on deer interest. Now, each morning, I fill the tray, knowing deer will drink it dry overnight.
Gray fox and red squirrels also find the open water to their liking. I'm happy to share.