On Wednesday, we told you a story about a frog survey being done of the vernal ponds at Hartley Park. Ryan Hueffmeier of the NRRI says its a listening survey, conducted by himself and citizen-scientists just after dark or before dawn.
Just this last week, naturalist Larry Weber took part in a similar survey: driving a 20 mile route and making stops at 12 dedicated wetlands to listen for frog calls.