Volunteers attend a two hour training workshop in February or March where they watch a slideshow, hear all the calls and get instructions on how to survey.  A cd of the calls and a survey manual is provided to all volunteer teams.  Volunteers choose a quarter square mile area with wetlands close to them to survey.

Surveys are done independently on damp warm evenings from March through July.  Surveys involve listening for three minutes and checking off each species heard.  Surveys must be done after dark several times a month.  Completed forms are returned to Friends of the Rouge who compiles, maps and reports on the data.