Amazon.com : HOME-X Set of 3 Bird Feeder Ball for Bird Seed, Iron Mesh Outdoor Bird Feeders, Hanging Feeders for Outdoor Birds, Set of 3, Each 4 ¾ " D x 4"
Duncraft.com: Duncraft Nuts & Bugs Seed Balls
Trio of Solid Birdseed Ball Ornaments | Gardener's Supply