A single piece of natural cuttlebone, which is the internal shell of a cuttlefish, rich in calcium and minerals. Pet birds (like parakeets, cockatiels, etc.) peck at cuttlebone to keep their beaks trimmed and healthy while ingesting essential calcium for bone and feather growth. This single cuttlebone comes with a holder for attaching to the cage, offering a simple, effective supplement for your bird’s diet.