Foot and audio enrichment toys are a great addition to any bird toy collection and are great way to pique curiosity and entertain birds all while developing balance, dexterity and strength. The HARI Smart.Play Willow in Spring will keep smaller birds entertained. Colourful beads, plastic stretchable tubing and metal chimes produce a tinkling sound as birds pull and play. The included mineral stones provide calcium enrichment. Bird-safe it installs easily with the included lead & zinc free, nickel plated quick link.