MARQUETTE - The Laughing Whitefish Audubon Society will sponsor a guided bird walk at 8 a.m. Sept. 14 at Presque Isle Park in Marquette. Participants should meet in the bog walk parking lot. The walk is expected to take about two hours to complete and will occur rain or shine. Tennis shoes are adequate footwear. Participants should bring a pair of binoculars for best viewing.