Duckhorn Wine Company has a history of going after wineries that dare to use a duck in their names or labels. But this time, the winery is hunting a potentially tougher target: the self-professed “redneck royalty” of the hit A&E TV show “Duck Dynasty.” The Napa Valley winery is going after the Duck Dynasty folks because they’ve used the word “Duck” and an image of a duck on their wines. That’s right: the reality TV stars with the motto “Faith, Family and Facial Hair” who made their fortune selling duck hunting gear have launched a wine brand, called “Duck Commander.”...