As spring – eventually – comes to Wisconsin, the morning and night air starts to fill with trills, peeps, croaks and grunts. That annual cacophony emits from the throats of the twelve species of frogs and toads that call Wisconsin home. Back in 1984, concerned about declining amphibian numbers, the Wisconsin Department of Natural Resources put out a call for volunteers to help identify the croakers near them. That annual Frog and Toad Survey has grown over the years, and now encompasses over 100,000 sites. Andrew Badje is a conservation biologist with the Wisconsin Department of Natural Resources, and he joined the Monday Buzz to tell us more about this long-running effort at citizen science.