Uncle Si Single Reed Duck Call | Duck Dynasty Duck CallUncle Si Single Reed Duck Call Duck Dynasty Duck Call It takes them directly to the lures. In Uncle Si's words, "This call will take you right to the decoys, Jack!" Easy blow functionality and high, harsh tone make the Uncle Si Single Reed Duck Call a choice for hunters. Easy to blow. Uncle Si designed this call to be rough and easy to blow. His high and harsh tone is nothing short of duckling. Whether you are a beginner or an experienced user, the