Pickerel FrogLithobates palustris
Often found in and around bodies of cooler water such as springs, the boldly marked Pickerel Frog is relatively large and widespread.
Among the most attractive of Tennessee's frogs, Pickerel Frogs are typically 1.75 to 3 inches long. They are brown, copper or green and are characterized by distinctive square spots in two rows down the back, and bright yellow to orange splotches on the inner surfaces of the upper thighs and groin.
Southern Leopard Frogs have a white spot in the tympanum (eardrum) that Pickerel Frogs lack. Also, the spots on a Southern Leopard Frog are not rectangular.
A low-pitched snore, sounding like "yeeeeooow", lasting 1 to 2 seconds, generally heard in late March and into April.
Pickerel Frogs typically inhabit cool wooded streams and can be found in creeks, springs, ponds and reservoirs. However, they often wander into grassy fields and weedy areas during the summer.
Pickerel Frogs are carnivorous and they consume mostly small insects and other invertebrates.
Females lay eggs underwater in loose globular masses attached to vegetation. Eggs take about 2 weeks to hatch. Metamorphosis of tadpoles takes about 2 to 3 months.
Status in Tennessee:
This species occurs across the state but is relatively rare in the Coastal Plain of West Tennessee.
•Pickerel Frogs are sometimes found in the twilight zones of caves, especially during extended periods of hot weather
•One of the few poisonous frogs found in the U.S., Pickerel Frogs produce toxic skin secretions that can be irritating to humans and deadly to small animals
•Many frog-eating snakes avoid the Pickerel Frog
Best places to see in Tennessee:
Conant, R. and Collins, J. 1998. Peterson Field Guides: Reptiles and Amphibians (Eastern/Central North America). Houghton Mifflin Company, New York. 616pp.
Recording ©2010, Robert English, Leaps