The NBD’s twin brother, stacked with an extra reed. We have answered the call for a duck call that serenades the back water. Sitting back in the timber of your honey hole, you don’t always want to reach out and grab the birds by the throat. The NBD2 is the call you want when you’re whispering sweet duckiness in the ears of a flock of wary migrating mallards. Only available as a double reed.