Exercise Toys boost cardio, increase dexterity, agility, and balance – ultimately expending excess calories and help to keep pet birds in top physical condition. So cute in in or out of the cage, the HARI Smart.Play Monkey King provides pet birds with an fun way to tug, pull, twist and turn. Made with multi-coloured non-toxic bird-safe pinewood block, discs and beads it provided hours of chewing fun. It is easily hung with the included lead & zinc free, nickel plated quick link and chain.