Historically, only six records of Wood Frogs (Rana sylvatica) existed from South Dakota, all represented by museum specimens from the 1920s. No other Wood Frogs were reported in South Dakota for the next six decades, and the species was presumed extirpated until 1997 when Wood Frog calls were recorded at two sites in northeastern Roberts County. Since 1997, numerous individuals have continued to document Wood Frogs in northeastern Roberts County. It was not until 2016 that Wood Frogs were detected outside of northeastern Roberts County. Here, we report additional records of Wood Frogs from the Prairie Coteau, ca. 50 km southwest of previously known populations.
Skadsen DR, Davis DR. 2020. A population of wood frogs (Rana sylvatica) in southwestern Roberts County and a new county record for Grant County, South Dakota. The Prairie Naturalist 52:31–32. [PDF]