Creative Foraging Systems Large Foraging Treat Box, 4-Inch W by 4-Inch L Use for Caciques, Amazon Parrots African Greys Cockatoos Macaws and other large birds Foraging for food on a daily basis is highly recommended by both avian veterinarians and avian behaviorists For experience foragers fill with pellets such as Oven Fresh Bites or Zupreem's Fruit Blend Depress perforated slot and expose food if your bird has no experience with foraging boxes Pet safe material USDA approved food grade chipboard boxes