Avian X Green Top Rocker Duck Call Green. It mimics the sound of multiple hens calling at once making it ideal for luring in ducks. Additionally the Z-cut tone channel helps eliminate reed lock ensuring consistent performance. Specifications for Avian X Green Top Rocker Duck Call: Manufacturer: Avian X Call Type: Mouth Call Features of Avian X Green Top Rocker Duck Call Reed Type: Single Lots of volume Nasty nasally duck sounds Sounds like multiple hens at one time Z-cut ton channel eliminates reed lock Package Contents: Avian X Green Top Rocker Duck Call Avian X ZNK-ZNK6130: Green Top Rocker Duck Call Green