Hammered Copper Birdbath BowlHammered Copper Birdbath Bowl A lovely garden accent adds depth, dimension, and a focal point to a perennial bed, water feature or other natural setting. The Hammered Copper Birdbath Bowl from Achla Designs is a beautiful garden decoration designed to benefit the wildlife in your yard. The simple hammered copper birdbath bowl is designed to drop into our wrought iron hanging ring, or bowl stand, or used alone in a rock garden or garden DIY project.