Birds will preen, tug, and chew on the Cotton Preening Doll. The combination of wooden blocks and dyed cotton string provide a multitude and colors and textures that will engage birds for hours. This toy is recommended for large birds like macaws and cockatoos. We only use natural food dye to color our products, so birds can have a safe and fun time! We also offer the Tiny Preening Doll for smaller birds. Exercise caution around birds with overgrown nails, as the nails can get caught in the cotton.