100% bird safe! Natural Sola sticks with bark feature a soft, chewy center and crunchy skin. Fun for small to medium birds to chew and shred. The Amazons enjoy them as well but they don't last long! Tuck small seeds such as sunflower in the small center hole and this foot toy becomes a fun foraging toy! 4"x 1/2" -3/4". 4 Sticks per package.