My cockatiel took to this immediately and enjoys chewing it and turning it. It kept getting dropped to the bottom of the cage, to his dismay, and so I attached it near his "shelf" (could be placed near a perch) with some twine. He continues to enjoy one of them and I have the other 2 in reserve. He's chewing on it now and it is quite durable and ready for quite a lot of enjoyable playing time.
Reviewed by: (Verified Buyer) C Galper from New York, NY.