Listening to the sounds of frogs and toads

      |Knowing the sound of frogs and toads is very important for Michigan Department of Natural Resources volunteers, whose job is to document what they hear, to make a count of frogs and toads in the wild. Scientists have documented declines in the population of frogs and toads since the 1980s, representing a critical threat to animal life on our planet. Kristen Bein reports.

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