Gardening & Wildlife Why put a penny in a birdbath? February 5, 2026 by Tanp | Leave a Comment Putting a penny in a birdbath can help keep the water cleaner and safer for birds by preventing algae growth. Copper, found in pennies minted before 1982, has natural antimicrobial properties that inhibit algae formation, ensuring that your birdbath remains a welcoming oasis for local wildlife. Why Use a Penny in a Birdbath? Adding a […] Read more ยป