Tassled Pockets are designed to entice Pocket exploration. You can tie on colored wood to these ties. The intention is to destroy the ties and showcase the foraging capacity of the Pocket. Fill Parrot Pockets® with your birds dry pelleted diet or any other dry good idea for longer occupational time while you work! The diameter of the holes are made for diets like Harrisons Bird Food or ZuPreem cockatiel sized pellets. This Pocket size is intended for larger parrot species such as large macaws or cockatoos at 3" wide by 5" tall. Large Pockets come with 3 8in. ties on each side.