Garden birds use bird baths primarily to keep their feathers clean and in good condition. Bathing helps them remove dirt, dust, and parasites that can damage their plumage. Clean feathers are essential for efficient flight and insulation. Additionally, bird baths provide a crucial water source for drinking, especially in areas where natural water sources are scarce. Regular access to clean water supports their overall health and hydration. Bird baths also offer a safe place for social interactions, which are important for many bird species.