Urocitellus richardsonii
Current MDD v2.5 recognizes Urocitellus richardsonii as a living species in family Sciuridae, subfamily Xerinae, tribe Marmotini.
Current MDD country distribution: Canada · United States. Biogeographic realm: Nearctic.
Subregion detail: USA(IA,MN,MT,ND,SD).
Country-level distribution is a broad reference and does not mean the species occurs throughout every listed country or state.
Ground squirrels in this lineage occupy open grassland, steppe, montane meadow, scrub or desert depending on species. Exact vegetation, soil and elevation limits are species-specific.
Excavated burrows are central to shelter in many Marmotini ground squirrels, providing refuge from predators and temperature extremes. Exact burrow depth, entrances and seasonal use vary.
Related ground squirrels help break up the reference while showing how habitat, body form and movement can vary across the broader group.
Measurements are left Unknown until they can be tied to reliable species-specific sources. This avoids mixing sex, age, season or subspecies ranges from unrelated references.
Strong forelimbs and claws support digging, while compact terrestrial locomotion and rapid access to burrows suit open-ground foraging. Hibernation or estivation occurs in many lineages but is not universal and is not assigned here without species evidence.
Activity: primarily diurnal terrestrial ground squirrel; seasonal activity varies by species and climate
Behavior & communication: Most true ground squirrels are diurnal. Vigilance, alarm calls, scent communication and variable social tolerance occur across the group, but exact social systems must be sourced species by species.
These are related ground squirrels, not photographs of Richardson's Ground Squirrel. Use them as visual context for locomotion, posture, feeding and environmental use.
Group context: seeds, grasses, forbs, roots, fruits and invertebrates may all be used. Exact diet and seasonal balance are species-specific.
Unknown values remain explicit. Reproductive figures from related ground squirrels are not silently substituted for this species.
Unknown
Raptors, snakes and mammalian carnivores are common predator categories for ground squirrels; local predator lists vary across the range.
Burrowing aerates and redistributes soil, while grazing, seed consumption and caching connect ground squirrels to plant communities and predators.
Squirrels in the same broad group can look and live very differently. These credited references provide comparison without changing the facts for Richardson's Ground Squirrel.
The status above follows the current MDD v2.5 field for this accepted taxon. Country-level range and conservation category can change as assessments and taxonomy are updated.
Taxonomy, country distribution and conservation category are anchored to MDD v2.5. Unsupported measurements, reproductive values and lifespan remain Unknown rather than inferred from related species.
Group context: Marmotini ground-squirrel context: diurnal, terrestrial, burrow-centered squirrels with strong seasonal differences in activity across temperate and arid environments.
Taxonomy, country distribution and conservation status follow Mammal Diversity Database v2.5; broader family biology is used only as clearly labeled context.
