California Ridgway’s rail (Rallus longirostris obsoletus) occur almost exclusively in tidal salt and brackish marshes with unrestricted daily tidal flows, adequate invertebrate prey food supply, well developed tidal channel networks, and suitable nesting and escape cover as refugia during extreme high tides. Results
California condor (Gymnogyps californianus) ) is the only remaining member of its genus in the family Cathartidae, and is one of the rarest bird species in the world. California condors are obligate scavengers that primarily feed on large mammalian carcasses (e.g., deer (family Cervidae),
Giant garter snake (Thamnophis gigas) is endemic to the wetlands of the Sacramento and San Joaquin Valleys of California, inhabiting the tule marshes and seasonal wetlands created by overbank flooding of the rivers and streams of the Central Valley (Fitch 1940; Central Valley
Alameda striped racer (Masticophis lateralis euryxanthus) is commonly associated with small to large patches of chaparral or coastal scrub vegetation, interspersed with other native vegetation types and rock lands throughout Contra Costa County, most of Alameda County, and portions of northern Santa Clara
Coachella Valley fringe-toed lizard (Uma inornata) is endemic to the Coachella Valley in Riverside Couny, California, and is restricted to dune habitat created by wind-blown sand deposits. This lizard hibernates during the winter and is most active during daylight hours. When its
San Francisco Garter Snake (Thamnophis sirtalis tetrataenia) are isolated a small portion of San Mateo County and southern San Francisco. Essential habitat for breeding populations to occur includes open grass uplands and shallow marsh lands with adequate emergent vegetation, and
Blunt-nosed leopard lizard (Gambelia silus) is endemic to the San Joaquin Valley of central California (Stejneger 1893; Smith 1946; Montanucci 1965, 1970; Tollestrup 1979a). This species typically inhabits open, sparsely vegetated areas of low relief on the San Joaquin Valley floor and
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)
California red-legged frog (Rana draytonii) occurs from sea level to elevations of about 1,500 meters (5,200 feet). It has been extirpated from 70 percent of its former range and now is found primarily in coastal drainages of central California, from Marin County, California,
Yosemite toad (Anaxyrus canorus) is found in wet meadows and forests, at elevations of 4,800 to 12,000 ft. Indigenous to California, they are found in a 150 mile span of the Sierra Nevada Mountains (see Home Range and Critical Habitat below). Their activity period tends to be short, anytime