Western Chorus frogs (Pseudacris triseriata) are elusive creatures. Found along grasses or floating vegetation, these 1 to 1 1/2 inch long frogs are perfectly camouflaged to blend in with their surroundings. Generally these frogs have 3 dark stripes running down their dorsal surface and a bright cream stripe running atop the upper lip which break up their outline so they blend right in. The easiest way to locate them is by their call during a strong chorus as the tend to get quiet when there is any disturbance nearby. Another way to find them is to walk along a migration route during a spring shower at night with a flashlight, and they will be readily seen. I look for paved roadways or trails near vernal pools and one can witness the migrations in progress. Their skin is heavily textured and pebbly though not as strong as the toad.
Vocalizations: The Western Chorus Frog begins calling early in the spring at the same time as the Spring Peepers and Wood frogs. They have a unique call which can be likened to a thumb running across the bristles of a comb.