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Threatened, Endangered, and Protected Species

Joshua Tree Joshua Tree (Yucca brevifolia)


The Joshua tree has become an important symbol of the Mojave Desert. Named after the biblical figure Joshua by Mormon Pioneers, Joshua Trees grow best at elevations between 2,000 and 6,000 feet, prefer flat or gently sloping terrain, and are usually... more details >>

California Oak California Oak


There is a variation of California’s Oak trees found throughout the state. The main species of oak in southern California include blue oak, Interior live oak, valley oak, canyon oak, coast live oak, California shrub oak, and Engelmann oak. They are found to be the dominant species in many San Bernardino chaparral... more details >>

Santa Ana River Woolly Star Santa Ana River Woolly Star (Eriastrum densifolium sanctorum)

Biologists call it the Eriastrum densifolium sanctorum. The Santa Ana River woolly star is a wild flowering plant. It belongs to the Riversidian Alluvial Fan Sage Scrub family that dominates the Santa Ana River flood plain. With stems growing 10 to 30 inches tall from a woody base, the plant has a white woolly color with irregularly divided leaves... more details >>

Desert Tortoise Desert Tortoise (Gopherus agassizii)


The desert tortoise is designated California’s state reptile and is found in the Mojave and Sonoran Deserts of Southern California. They inhabit semi-arid grasslands, gravelly desert washes and sandy canyon bottoms below 3,500 ft. The desert tortoise... more details >>

Mountain Yellow-Legged Frog Mountain Yellow-Legged Frog (Rana muscosa)

The mountain yellow-legged frog is approximately 1.5-3.5 inches in size. The dorsum is highly variable with olive, yellowish or brown color, with variation of black or brown lichen-like markings. Undersurfaces of the legs and lower belly are yellow.... more details >>

Least Bell’s Vireo Least Bell’s Vireo (Vireo bellii pusillus)


The least Bell’s vireo (LBVI) is a migratory songbird, dependant upon the riparian habitat for breeding. Least Bell's vireo is 4 ¾ -5 inches in size, and is smaller than a sparrow. Its coloring is dull olive-gray above, whitish below, a faint white eye ring .... more details >>

Coastal California Gnatcatcher Coastal California Gnatcatcher (Polioptila californica californicus)


This small, inconspicuous coastal California gnatcatcher flies over the coastal sage scrub plant community in search of food. A predominantly bluish gray bird, its darker back and mostly black tail contrast with its lighter-colored belly. This bird depends upon coastal sage scrub. It can live nowhere else. Historically... more details >>

Burrowing Owl Athene cunicularia Western Burrowing Owl (Speotyto cunicularia)

The Western burrowing owl, a California Species of Special Concern, is declining across much of the state. Lost of habitat to urban development, ground squirrel control efforts, and intensive agriculture practices are the primary reason for the decrease in numbers of this bird..... more details >>

San Bernardino Kangaroo Rat San Bernardino Kangaroo Rat (Dipodomys parvus)

The San Bernardino kangaroo rat (SBKR) has faintly yellowish tinted fur with an over-wash of dusky brown above and white underpants. It has a long tail with a white side stripe wider than the dark stripes and a dusky tufted tip. It has a dark line on either side of the nose. It is the smallest .... more details >>

San Bernardino Kangaroo Rat Southern Rubber Boa (Charina bottae umbractica)

The Southern rubber boa is smooth and shiny. Uniformly olive-green, reddish-brown, or tan to chocolate-brown. The scales are smooth, in 32-53 rows. Large scales are on top of its head. Adult grow to over thirty inches. The average is from 14-33 inches long. The short broad head and tail give it a two-headed look and the eyes small,....more details >>

Image of Microtus californicus Mojave River Vole (Microtus californicus mohavensis )

The Mojave River vole, also referred to as the Mojave River meadow mouse, is a federal listed Species of Concern, as well as listed by the state as a Species of Special Concern. The primary threats to the Mojave River voles are the destruction and fragmentation of habitat resulting from agriculture and urbanization..... more details >>

Image of Microtus californicus Mohave Ground Squirrel (Spermophilus mohavensis)

About 9 inches from nose to tip of tail, the Mohave Ground Squirrel is found only in the western Mojave Desert. Their sophisticated desert survival skills allow them to avoid the extremes of the hostile climate. Hard to find and even more difficult to observe and study, these rare and elusive little rodents have baffled biologists over the years.... more details >>


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