Frogs & toads

Contact for the MFTCS:

Contact to sign up as a volunteer, ask about available routes, or to get more general information about the MFTCS:

Janine Kohn
Nongame Wildlife Program
Division of Ecological & Water Resources
Minnesota Dept. of Natural Resources
500 Lafayette Road, Box 25
St. Paul, Minnesota 55155
Phone: (651-259-5905 Email: Email Janine

Minnesota Frog & Toad Calling Survey (MFTCS)

MFTCS logo

The DNR's Nongame Wildlife Program is sponsoring an ongoing state-wide study of Minnesota's frogs and toads. Since 1996, volunteers across Minnesota have collected data by listening to and identifying frog and toad species on specified 10-stop routes. The results of this ongoing study will provide information on where species are located throughout the state, and how their populations change in abundance and distribution.

We begin recruiting new volunteers in March; however, we begin accepting route requests as early as January 1.  To see a map of available routes, please go to: .  Under the Potential Volunteer tab, click on "route availability map", select "Minnesota", and then "show map".  You can then zoom to different parts of the state to see which routes are vacant (green) and in need of a volunteer.  If you are interested in participating in the frog and toad survey, please email Janine Kohn with the name and number of the vacant route as well as your contact information (phone number and mailing address).

For current volunteers:


MFTCS Results

Survey data is available for display or download on the North American Amphibian Monitoring Program (NAAMP) website 

Calling hybrid American-Canadian toad

Calling peeper

We would like to thank Hamline University Center for Global Environmental Education for providing copies of The Calls of Minnesota's Frogs and Toads CD at reduced cost for our volunteers.


More DNR volunteer opportunities