GUEYDAN — The Gueydan Duck Festival will celebrate 50 years of tradition, community, music and Louisiana culture with events beginning Saturday, Aug. 15, and culminating in the four-day festival Aug. 27-30. The first upcoming event will be the 56th annual Louisiana State Duck and Goose Calling Contest on Aug. 15 at the Gueydan Civic Center, 901 Wilkinson Drive. Registration for all duck-calling …