Western Chorus Frog
The western chorus frog has three dark lines on its tan, gray or green-gray back. Sometimes the lines are broken into a series of spots. This one-and-a-half-inch frog is now found throughout Illinois, although at one time it was probably more of a prairie animal. The western chorus frog is one of the first frogs to appear in spring. It begins breeding after the first warm rains in early March and continues into May. The peak of calling is in late March. These little frogs enter shallow, often temporary, pools and ponds in great numbers. Here, they call while hiding in vegetation. After the breeding season these secretive creatures are seldom seen. The call is heard day and night and can be imitated by passing the fingers over the small teeth of a comb.