MassGIS Butterfly Atlas Viewer

Acadian Hairstreak

Want to dive deeper into the Butterfly Atlas?
Mass Audubon has partnered with MassGIS, Massachusetts' Office of Geographic and Environmental Information, to enhance your exploration of the Butterfly Atlas data. The MassGIS Butterfly Atlas Viewer allows you to interactively create your own maps of all or a portion of the state, identify all species found in a survey block during the Atlas period, and overlay butterfly distribution on road, land use and aerial photograph backgrounds. Customize your view with zoom and pan tools, or jump straight to your town to list the species that were seen there! The Butterfly Atlas Viewer works best with a high-speed Internet connection, but with patience, dial-up users can access this information, too.

The Butterfly Atlas Viewer can map 101 of the species identified in the state during the Atlas period. Making a map is easy: just choose the information you wish to display on your map by clicking on check boxes on the left side of the screen, and click the "Refresh Map" button. In a moment, your requested map will appear! Although you could select multiple species at a time, it is best to select only one. Map navigation and information tools are provided on the right side of the screen, including a drop-down menu of Massachusetts' towns. Clicking on the "Identify" tool allows you to generate a list of species found in an area by clicking on any Atlas grid cell; the list appears at the bottom of the screen. Additional help and information can be found on the Butterfly Atlas Viewer page.