The JW Nutcase is a stretchy, rubber football-shaped bird toy that hangs from a chain inside the cage. The soft, flexible rubber is tough and can be stretched and filled with your pet bird's favorite nuts or treats. Small cutouts in the rubber allow your pet bird to hold it and to manipulate the toy to remove the treats inside. This toy is both intellectually and physically challenging to help keep your bird entertained. Great for parrots of all sizes.