Oregon spotted frog (Rana pretiosa) is never plentiful where found. In California the spotted frog is found in the northeastern portion of the state at elevations ranging from about 1000 m (3280 ft) in Shasta County to about 1450 m (4760 ft) in Modoc County (Jennings and Hayes 1994). This species is found in low, swampy areas in mountainous woodlands and wet meadows. A highly aquatic species, it’s never found far from various aquatic habitats, springs, small cold streams and lakes (Wright and Wright 1949, Dumas 1966, Stebbins 1985). It is usually buried in the mud during the cold winter months but can be found above ground during sunny days throughout the winter (Turner 1960). Reference
Federal Status
THREATENED
California Status
SPECIES of SPECIAL CONCERN
Survey Protocol
- USFS Surveys for presence of Oregon spotted frog (Rana pretiosa) 2010
- Oregon spotted frog vs. red legged frog Egg Mass Differentiation – 2015
Home Range and Critical Habitat
Map Data Source: California Wildlife Habitat Relationship (CWHR), USFWS Critical Habitat Data Portal
Photo credits: header (cropped) – Teal Waterstat on USFWS Flickr, featured image – Mid-Columbia River Refuges Flickr