Providing water for birds during the winter is essential to support their survival, as natural water sources often freeze in colder months. Birds need access to liquid water for hydration, to bathe, and to help with digestion. A reliable water source can help them conserve energy, as they won't have to waste time searching for unfrozen water. To make water accessible during winter, consider using heated birdbaths or placing containers in sunny spots where ice is less likely to form. Or, use a birdbath heater to prevent water from freezing, especially in colder climates. These special heaters keep the water warm without overheating. It's important to keep the water clean and free from ice, as well as to refresh it regularly to ensure birds always have access. Offering water alongside birdseed or suet will provide a well-rounded resource for wintering birds.

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More information here: birds.cornell.edu