Manzanita is one of the hardest hardwoods found on earth. Parrots love to chew and most wood is no match for their sharp and powerful beaks. The 100% natural MANZANITA SUPERROOST is made from branches which usually come in irregular shapes and diameters. These perches are sandblasted to provide a superior perching surface, remove foreign matter and assure there are no sharp edges to damage your bird's feet. This is more like the branches the birds would be perching on in the wild. Made in the USA! Available in the Following Sizes: Medium for Quakers through Pionus. Large for Pionus through African Grey Extra Large for Macaws and Cockatoos.