Nature lovers who encounter fluttering butterflies might also be able to contribute to research about the colorful insects.
Researchers at the University of Maine say residents can use a mobile app to provide details about areas where butterflies are likely to be found. They plan to use the data as part of a model designed to predict the location of monarch butterfly nesting sites.
The UMaine researchers say monarch butterflies begin a 3,000-mile migration south every fall. They also say the number of monarchs that complete the migration has fallen by 90 percent in the past two decades.
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App users will be able to answer a short survey and provide photos. They'll be able to head to predetermined sites or find locations of their own.