Our Duck Callers, best described as a duck whistle, come in 4 color variations. These black color duck whistles make an obnoxious duck quacking sound when blowing into the bamboo whistle. Air blown through the bamboo passes over a rubber diaphragm creating the quacking 'whoopie cushion' type sound. Don't expect to catch or call any actual ducks using this duck whistle. Just because it looks like a duck and supposed to sound like a duck, doesn't mean it actually call real ducks :) Made from hand carved Albasia wood & bamboo. Approximately - 5" x 0.75" x 2" (L) x (W) x (H)