California Ground Squirrel

California Ground Squirrel

Otospermophilus beecheyi

Silhouette: Joseph Smit · PhyloPic

Least ConcernNear ThreatenedVulnerableEndangeredCritically Endangered
Daily sighting probability ~70% · Very likely
at Yosemite National Park
1,280 Verified sightings at Yosemite National Park From 2019 to 2026
1,630 Verified sightings across all 3 parks From 2019 to 2026
October Best month highest sighting rate
☀️ Diurnal When it's spotted during daytime hours (6am–6pm)

About the California Ground Squirrel

The California ground squirrel (Otospermophilus beecheyi), also known as the Beechey ground squirrel, is a common and easily observed ground squirrel of the western United States and the Baja California Peninsula. It is common in California with its range spanning through much of the state, as well as northeastern Nevada in areas around Reno and Lake Tahoe.

Formerly placed in Spermophilus, as Spermophilus beecheyi, it was reclassified in Otospermophilus in 2009, as it became clear that Spermophilus as previously defined was not a natural (monophyletic) group. John Richardson, who originally described the species as Arctomys (Spermophilus) beecheyi, or "Beechey's marmot", named it after Frederick William Beechey, an early 19th-century British explorer and naval officer. The squirrel's upper parts are mottled, with the fur containing a mixture of gray, light brown and dusky hairs. The shoulders, neck and sides are a lighter gray. The fur around the eyes is whitish. The underside is lighter, buff or grayish yellow. Head and body are about 30 cm (12 in) long and the tail an additional 15 centimetres (5.9 in). They can weigh from 280 to 738 g (9.9 to 26... Wikipedia →

Global Distribution

Warmer areas are where this animal is recorded most often.

Parks Where Found

# Park Country Daily sighting probability
1 Yosemite National Park 🇺🇸 United States
~70%
2 Joshua Tree National Park 🇺🇸 United States
~30%
3 El Vizcaíno Biosphere Reserve 🇲🇽 Mexico
~20%

Quick answers

What are the chances of seeing a California Ground Squirrel in Yosemite National Park?

About 70% of wildlife watchers report a California Ground Squirrel sighting in Yosemite National Park, based on 1,280 verified sightings from GBIF citizen-science data.

When is the best time to see California Ground Squirrel in Yosemite National Park?

October has the highest sighting rate for California Ground Squirrel in Yosemite National Park in our monthly data.

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