Learn all about birds at this special event. Activity Stations and Bird Passports are available 8:00 a.m.-12:00 p.m. at Glacial Park and at Volo Bog Sunday May 1, 12:00-4:00 p.m. Get your passport stamped as you participate in over a dozen games and activities! More stamps = more prizes, including our ever-popular Audubon plush bird that sings its song when squeezed! Door prizes include binoculars, photo prints, and more.