A generalist feeder with a shrinking footprint
Stephens’s kangaroo rat measures around 11 to 12 inches from nose to tail tip. It weighs about 2.4 ounces, a fairly typical size for the genus. What stands out is its diet: recorded feeding includes fiddleneck, Mediterranean grass, storksbill, red brome, Russian thistle, California sagebrush, and mustard, alongside insects, a wider spread of plant species than many of its more specialized relatives take on.
One of the sparsest records in the atlas
Only 15 total records exist for this species, all from California, making it one of the least frequently documented kangaroo rats covered here. Elevation records for the handful of confirmed sightings run from about 130 feet up to over 7,500, though nearly all sit under 2,500 feet, consistent with valley and foothill grassland rather than high mountain terrain. That scarcity lines up with its conservation status: the IUCN lists Stephens’s kangaroo rat as Vulnerable, and its habitat list of river corridor, grassland, and shrubland points to exactly the kind of low-elevation inland valley terrain in Southern California that has faced heavy development pressure.
A short life, bred more than once a year
Females can produce close to two litters annually, each averaging two to three young, but the species doesn’t appear to live long: the oldest recorded individual reached just over two years. That combination of frequent, modest-sized litters and a short lifespan suggests a population that depends on steady annual breeding to hold its numbers steady, with little room to absorb added habitat loss.
Conservation: vulnerable
With so few documented records and a range confined to a small part of inland Southern California, Stephens’s kangaroo rat remains one of the more precarious kangaroo rats in this atlas. Its Vulnerable status reflects ongoing habitat conversion in the grassland and shrubland it depends on.
