The Large Knots N Slats toy is perfect for big birds with big beaks. The thick wooden slats and beads are the perfect size for macaws or cockatoos to bite and chew. The cotton rope that these wooden pieces are strung on can also provide an excellent opportunity for preening. Each of the wood pieces is dyed using natural food dyes, and the quick link allows the toy to attach to virtually any birdcage. We also offer the Medium Knots N Slats for smaller birds.