Silver Birdcage Charm with Bird Inside with Swirls. This is such an adorable birdcage charm! The birdcage is actually curved to look like a real birdcage and has dainty swirls. This charm measures 1 1/4 inch from the top to the bottom of the cage, and is just over 3/4 inches across. Great for artist trading cards, altered art and so many jewelry projects. You will receive one charm for each quantity that you order.