These 3" birdie bagles are perfect for medium birds, especially the heavy chewers, or any large bird that is not an aggressive chewer. The birdie bagels measure 3" on the inside diameter and 4" on the outside diameter. Birdie Bagels and Bird Bites provide parrots with the psychological enrichment often missing from the life of a captive parrot. *Great for feather pluckers and destructive birds. *Satisfies the need for chewing, shredding, and peeling. *Inexpensive (great value). *Non-toxic.