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Maine Amphibian Monitoring Program

Maine Amphibian Monitoring Program (MAMP) volunteers collect information about the abundance and distribution of calling amphibians (frogs and toads) on road-side survey routes across the state every spring.

What is MAMP?

MAMP was established in 1997 and is a joint effort between Maine Audubon and the Maine Department of Inland Fisheries and Wildlife. It is also part of a larger national effort, the North American Amphibian Monitoring Program (NAAMP), which coordinates similar surveys in more than 25 states. MAMP was one of the first participants in NAAMP and remains one of its most successful partners, with over sixty routes across the state, most of which are run every year by dedicated and enthusiastic volunteers like you.

What do MAMP Volunteers Do?

MAMP volunteers are assigned a road route with ten survey stops identified at or near wetlands. The routes are run three times a year, once in early spring, once in late spring and once in early summer. Each run is designed to capture a different group of calling amphibians. The routes are run after dark and take between two and three hours. At each survey stop, volunteers listen for five minutes and record the relative abundance and the species of amphibians they hear. For more information about what the surveys entail, read the Volunteer Guidelines.

Where are MAMP Routes?

The state has been divided into three zones (coastal, interior, and northern). Each zone has slightly different guidelines for when to survey for calling amphibians. There are 61 MAMP routes across the state. Click on Maine to zoom into available routes.

What Frogs and Toads will I hear on a MAMP Route?

Maine has nine species of frogs and toads that you might hear when surveying, but not all species call at the same time of the year. Species like Spring Peeper are common and call throughout much of the spring and early summer, while species like Wood Frogs call for only about two weeks, when the ground is thawing and snow is melting. You can look up all the species you might hear, and learn their calls, at the USGS Frog Quiz page. Click on the state of Maine for a complete list of species that occur here, and then use the “Frog Call Lookup” section to hear an audio clip of their call.

How Do I Sign Up to Participate?

  • Check the map of open routes to find one in your area, and then contact Becca Wilson at or call 781-2330 ext. 222 to sign up for an open route. (See Volunteer Resources below)
  • You’ll be mailed a map of the route and a written description of each stop.
  • Review frog calls online and then take the online Frog Quiz.
  • You’ll need some basic supplies and will need to review the complete protocol (See Volunteer Resources below).
  • To familiarize yourself with frog calls, we suggest getting a copy of Maine Amphibians and Reptiles, University of Maine Press, $20. This is an excellent reference book, has abundant information on Maine’s calling frogs, and includes a CD with frog calls you can use to learn the calls and test yourself on identifying frogs within a chorus.

Contact MAMP

  • Susan Gallo
  • Maine Audubon
  • 20 Gilsland Farm Road
  • Falmouth, ME 04105
  • (207) 781-2330 ext. 216

External Resources