FrogWatch USA, Saint Louis Zoo's FrogWatch Chapter
In this citizen science program, volunteers learn about wetlands and the breeding calls of frogs and toads in our area. You’re required to monitor a site for a specific period of time during the breeding season. Gathering this information leads to finding practical and workable ways to stop wetland and amphibian decline. Some training is involved; see the website for training dates.  This website is specific to the St. Louis area, for more information about the national program - FrogWatch USA, check out their homepage: http://www.aza.org/frogwatch/