Just saw this in the shops and a cache came together....you'll see why...
As a tool, a duck call is like a traditional whistle made to emulate the sound of a duck. Early duck calls were simple woodwind instruments with a barrel, a sounding board and a reed. Hunters would grunt into the call while saying "hut", "wuit", or "kak". With the improvement of calls and calling techniques the best callers do not use their voice to perform their techniques.
The two most common high quality duck call materials are wood and acrylic. The key difference between wood and acrylic duck calls is that acrylic calls are much louder and carry much further than wood duck calls. This is important for different types of duck hunting. Acrylic calls are preferred in large, open spaces for a call to reach out and find the ducks. When hunting in timber or swampy area, a wood call is preferable. Another key difference is that acrylic is known to show less sound variance over the temperature ranges expected in a duck blind.
Congratulations to Mr PI for his FTF....He certainly put the time in !!