&ldquo;Preen & Swing&rdquo; Bird Toy - Stimulates Healthy Exercise and Satisfies a Bird&rsquo;s Preening Instinct This bird toy is loaded with multi-colored shreddable sisal strands to chew and preen on  which may help birds that are prone to feather plucking or destruction. The durable 3/8 thick metal ring is wrapped in comfortable cotton rope forming a strong yet comfortable swing that will encourage healthy exercise. Your pet will enjoy the jingling of the attached liberty bell. This swing installs easily with the included pear link. Small: 8" x 8" x 1" : Perfect for parakeets, lovebirds, parrotlets, cockatiels, conures and other birds up to the size of quaker parrots. Large - 11" x 11" x 1: Works well for a GROUP of SMALL BIRDS or ONE medium to large-sized parrots, including eclectus parrots, African greys, cockatoos, amazon parrots and macaws. Please note: The perch diameter at the bottom, which includes the knotted sisal, is about 1 inch. So this swing may not be allow the largest of birds to perch comfortably on it, but they are still likely to hang on to it for swinging, jingling and preening.