Breaking the ice in late winter to measure road salt concentration.

Ryan Calsbeek measuring water quality in a roadside pond.

Readying the field experiment with tadpole cages.

Spotted salamander navigating the road to breeding.

Spotted salamander on the edge of a roadside pond. Oil slick is visible in the runoff leading to the pond.

My daughter hard at work during the field season!

My son loving the field despite the usual cool, rainy weather of frog season!

A typical spring scene at one of our pools in Norwich, Vermont.

Checking buckets for frogs and salamanders.