Hide fresh fruits, vegetables or treats behind the rings of the Snack Rack and observe as your bird spins and moves the rings up and down to reveal the food. When your bird turns the rings to just the right position, they slide up and down to conceal and reveal the top and bottom treat-filled chambers. At first, hide treats in the top chamber and conceal them with... More the rings. When the bottom ring is turned to just the right position, it drops to reveal the reward. Once your bird has it mastered, hide treats in the bottom chamber and conceal with the rings. Now, your bird must turn the top ring to the right position and RAISE the ring. Youll be amazed at your birds brilliant ability to solve the puzzles. The Snack Rack is made of tough polymer to resist chewing. Sized for medium and large parrots.