Prevue Pacific Perch Beach Walk Bird Perch Color VariesPrevue Beach Walk Bird Perches are made of 100% natural and digestible ground calcium and coated with ground up seashells to provide a comfortable grip and help groom beaks and nails. They're a great way to provide your bird with healthy foot exercise 100% natural, digestible ground calcium with real sea shells Variable shape exercises feet and texture grooms nails and beak A healthy alternative to ordinary perches Bird perch comes in assorted colors