Introduction
Birdbaths can be pre-made basins on pedestals and columns or hang from leaves and trees, or be carved out depressions in rocks and boulders. Requirements include: a shallow gradually deepening basin; enough open surroundings to minimize cats' stalking; clean and renewed-refilled water; and cleaning to avoid contamination and mosquitoes. Two inches of water in the center is sufficient for most backyard birds, because they do not submerge their bodies, only dipping their wings to splash water on their backs. Deeper or wide basins can have "perch islands" in the water, which can also help discourage feline predators. Elevation on a pedestal is a common safety measure, providing a clear area around the birdbath that is free of hiding locations for predators. A bird feeder can complement a bird bath to encourage birds to linger and return.
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