"This chain of toys is one of the best that I recommend for any bird. They're natural, shred easily, and provide days of entertainment. I've bred cockatiels for years now and I've never met a 'tiel that won't shred one to pieces. Specifically, I've used these toys for 'tiles, 'keets, red bellied parrots, and maximillian pionus. Wonderful toys, very safe, and rather inexpensive."