Colorful and natural foot toys that provide birds with chewing and foraging fun. Balls come assorted in a 3 pack. Each ball is 100% bird safe as they are made from natural vine. The vine has been formed int a sphere and are brightly colored to be even more enticing. Lightweight with hollow centers to add shredding or your favorite foraging treat. Each ball measures around 4 inches in diameter. Donate this item to the Cincinnati Zoo for our very own birds to forage and play with.