Ceramic Series - Vintage Style Ceramic Bird Whistle & Water Warbler, Brown Sparrow Flute - Clean & Tested 2.95" (75x55x45 mm) Ceramic Bird Whistle Smooth glazed surface This whistle can also be used as a water warbler. Put in water until filled to create a realistic bird like twitter. Ceramic Sparrow Whistle Ceramic charms have variation. A unique gift for yourself or that special someone!