Calling from the reeds at the edge of the pond, like a banjo player striking a string.
Found while hiking at Starved Rock
They were all around the shore in the reeds and mud. I've never seen so many frogs scatter when I approached. They also made a strange squeaky quack noise when startled.
pond at edge of woods
One seen in stream.
The American bullfrog (Lithobates catesbeianus), often simply known as the bullfrog in Canada and the United States, is an aquatic frog, a member of the family Ranidae, or “true frogs”. This species has traditionally been classified as Rana catesbeiana, however the classification has been changed to Lithobates due to paraphyly in Ranidae. This frog has an olive green back and sides blotched with brownish markings and a whitish belly spotted with yellow or grey. The upper...