![]() LIFE CYCLE: Red foxes are estimated to live two to four years in the wild, though no longevity data have been collected for the Sierra Nevada red fox specifically. The Sierra Nevada red fox's relatively low reproductive capacity makes recovery from population decline more difficult than for other foxes. Its gestation period is between 52 to 54 days pups are born in early to mid-April, moving outside the den by June but not very mobile until later in the summer. Mating and den construction occur in January and February the fox is believed to be monogamous. MIGRATION: Sierra Nevada red foxes are seasonal elevational migrants, moving from alpine and subalpine habitats in summer down to mid-elevation habitats in winter.īREEDING: Sierra Nevada red fox breeding occurs between December and March. Now the fox remains in two small California populations: one near Lassen Peak, with likely fewer than 20 known foxes, and a second near Sonora Pass on the Humboldt-Toiyabe and Stanislaus national forests, with only three known foxes. RANGE: The Sierra Nevada red fox historically ranged from Tulare Country northward through California's Sierra Nevada Mountains and the Cascade Mountains of Northern California and Oregon. ![]() HABITAT: The Sierra Nevada red fox lives in a wide range of remote, high-elevation alpine and subalpine habitats, including meadows dense, mature forest talus and fell fields. The cross phase, which is dominant among Sierra Nevada red foxes, exhibits characteristics of both the red and the black/ silver phases. In the black/silver phase, which varies from silver to black, silver guard hairs afford a “frosted” appearance. In the red phase, a reddish-brown upper body contrasts with white cheeks, chin, throat and abdomen. This fox occurs in three genetically determined color phases: red, black/silver and cross. It is typically smaller than lowland red fox subspecies, with males weighing up to 9.2 pounds and measuring up to 3.4 feet long and females up to 7.7 pounds and 3.2 feet. ![]() SIERRA NEVADA RED FOX } Vulpes vulpes necatorĭESCRIPTION: The Sierra Nevada red fox has a small, slender body and legs long, pointed ears an elongated snout and a long, white-tipped tail. ![]()
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