Bird baths are essential for winter birds

Bird baths and other water features attract many birds to a yard. We all know that water is essential for all creatures during the heat of summer, but birds also need water in winter. Keeping a bird bath ice-free is a challenge, so a couple of years ago we purchased a bird bath heater. It is a big draw. One frigid day recently, I spotted a squirrel (nothing keeps them away from yards), a Northern cardinal, and a Caroline wren drinking from the bird bath in quick succession.
Naturally, you'll need to check the water level regularly to make sure it doesn't dry out. It is also necessary to clean it on a regular basis. If this sounds like a lot of trouble, it is. But you'll have the satisfaction of knowing that you are helping birds survive.