Silver Whistle

Background
While stranded on a desert island, Rosella discovered she had a dead fish still in her pocket, which she threw at a pelican in frustration. The bird dobe and caught the fish, but dropped a silver whistle from its beak as it did so. By tooting on the whistle, Rosella was able to summon a dolphin, which rescued her and returned her to the mainland of Tamir. Where the bird obtained the whistle is unknown. Howeve,r when the wicked witch was sending her minions to attack Dorothy and her friends traveling to the Emerald City, she summoned them by blowing on a silver whistle. Silver whistles are not that uncommon though, so it is doubtful that this was the same whistle that Rosella found. On the other hand, you never know.