ECHO CALLS INC Timber Duck Black Single Reed Acrylic. This Duck Call from Echo Calls produces a wide range of duck sounds from loud hail calls to soft raspy quacks. Plus Echo Calls the calls ring will not deteriorate it will get better with age. The Duck Calls echo the sound of the ducks they are calling. So the other ducks will think something is wrong and get scared. Which means they will come in and investigate. So the next time your in the duck blind make sure you have your Echo Calls timber duck hunting call. Specifications for ECHO CALLS INC 77715 Timber Duck Black Single Reed Acrylic: Manufacturer: Echo Calls Color: Black Fabric/Material: Acrylic Species: Duck ECHO CALLS INC 77715 Timber Duck Black Single Reed Acrylic