Animalia > Chordata > Mammalia > Rodentia > Sciuridae > Sciurus > Sciurus griseusSciurus griseus (western gray squirrel)Language: Spanish The western gray squirrel (Sciurus griseus) is an arboreal rodent found along the western coast of the United States and Canada. In some places, this species has also been known as the silver-gray squirrel, the California gray squirrel, the Oregon gray squirrel, the Columbian gray squirrel and the banner-tail. There are three geographical subspecies: Sciurus griseus griseus (central Washington to the western Sierra Nevada in central California); S. g. nigripes (from south of San Francisco Bay to San Luis Obispo County, California; and S. g. anthonyi, which ranges from San Luis Obispo to northern Baja California). |
Uniqueness Scale: Similiar (0) Unique (100) Uniqueness & Vulnerability Scale: Similiar & Secure (0) Unique & Vulnerable (100) ED Score: 2.9 EDGE Score: 1.36 |
| Adult Weight [1] | 425 grams | | Birth Weight [2] | 75 grams |  | | Diet [3] | Frugivore, Granivore, Herbivore | | Diet - Fruit [3] | 20 % | | Diet - Plants [3] | 30 % | | Diet - Seeds [3] | 50 % | | Forages - Arboreal [3] | 100 % | | | Female Maturity [1] | 10 months 19 days | | | Gestation [1] | 44 days | | Litter Size [1] | 3 | | Litters / Year [1] | 1 | | Maximum Longevity [2] | 10 years | | Snout to Vent Length [2] | 11 inches (29 cm) | | Weaning [1] | 61 days |
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| Name |
Countries |
Ecozone |
Biome |
Species |
Report |
Climate |
Land
Use |
|
California Central Valley grasslands |
United States |
Nearctic |
Temperate Grasslands, Savannas, and Shrublands |
 |
 |
 |
 |
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California coastal sage and chaparral |
Mexico, United States |
Nearctic |
Mediterranean Forests, Woodlands, and Scrub |
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California interior chaparral and woodlands |
United States |
Nearctic |
Mediterranean Forests, Woodlands, and Scrub |
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California montane chaparral and woodlands |
United States |
Nearctic |
Mediterranean Forests, Woodlands, and Scrub |
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Cascade Mountains leeward forests |
Canada, United States |
Nearctic |
Temperate Coniferous Forests |
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Central and Southern Cascades forests |
United States |
Nearctic |
Temperate Coniferous Forests |
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Central Pacific coastal forests |
Canada, United States |
Nearctic |
Temperate Coniferous Forests |
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Eastern Cascades forests |
United States |
Nearctic |
Temperate Coniferous Forests |
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Klamath-Siskiyou forests |
United States |
Nearctic |
Temperate Coniferous Forests |
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Mojave desert |
United States |
Nearctic |
Deserts and Xeric Shrublands |
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Northern California coastal forests |
United States |
Nearctic |
Temperate Coniferous Forests |
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Palouse grasslands |
United States |
Nearctic |
Temperate Grasslands, Savannas, and Shrublands |
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Puget lowland forests |
United States |
Nearctic |
Temperate Coniferous Forests |
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Sierra Juarez and San Pedro Martir pine-oak forests |
Mexico |
Nearctic |
Temperate Coniferous Forests |
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Sierra Nevada forests |
United States |
Nearctic |
Temperate Coniferous Forests |
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Snake-Columbia shrub steppe |
United States |
Nearctic |
Deserts and Xeric Shrublands |
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Sonoran desert |
Mexico, United States |
Nearctic |
Deserts and Xeric Shrublands |
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Willamette Valley forests |
United States |
Nearctic |
Temperate Broadleaf and Mixed Forests |
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| Name |
IUCN Category |
Area acres |
Location |
Species |
Website |
Climate |
Land Use |
|
Anza-Borrego Desert State Park, CA |
III |
184543 |
California, United States |
|
 |
|
|
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Bishop Pine Preserve |
|
|
California, United States |
|
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|
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California Coast Ranges Biosphere Reserve |
|
153447 |
California, United States |
|
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Cosumnes River Preserve Nature Conservancy - Preserve |
Ia |
2138 |
California, United States |
|
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Dye Creek Preserve Nature Conservancy - Preserve |
Ia |
38152 |
California, United States |
|
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Elkhorn Slough Preserve Nature Conservancy - Preserve |
Ia |
964 |
California, United States |
|
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Fairfield Osborn Preserve Nature Conservancy - Preserve |
Ia |
190 |
California, United States |
|
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Hamilton Preserve Nature Conservancy - Preserve |
Ia |
52 |
California, United States |
|
|
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Heath and Marjorie Angelo Coast Range Preserve Nature Conservancy - Preserve |
Ia |
7008 |
California, United States |
|
|
|
|
|
Jackson Demonstration State Forest |
|
|
California, United States |
|
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Lake Chelan National Recreation Area |
II |
606367 |
Washington, United States |
|
|
|
|
|
Landels-Hill Big Creek Preserve Nature Conservancy - Preserve |
Ia |
45 |
California, United States |
|
|
|
|
|
Lassen Volcanic National Park |
II |
29388 |
California, United States |
|
|
|
|
|
McCloud River Preserve Conservation Easement |
|
1693 |
California, United States |
|
|
|
|
|
Mojave and Colorado Deserts Biosphere Reserve |
|
5901 |
California, United States |
|
|
|
|
|
Mount Tamalpais State Park |
|
6365 |
California, United States |
|
|
|
|
|
Muir Woods National Monument |
V |
492 |
California, United States |
|
|
|
|
|
Oregon Caves National Monument |
V |
456 |
Oregon, United States |
|
|
|
|
|
Philip L. Boyd Deep Canyon Desert Research Center |
|
6101 |
California, United States |
|
|
|
|
|
Point Reyes National Seashore |
II |
27068 |
California, United States |
|
|
|
|
|
Redwood National Park |
II |
77867 |
California, United States |
|
|
|
|
|
Ring Mountain Preserve Nature Conservancy - Preserve |
Ia |
438 |
California, United States |
|
|
|
|
|
San Francisco Peninsular Watershed County Wildlife Refuge or Management Area |
|
30320 |
California, United States |
|
|
|
|
|
San Joaquin Biosphere Reserve |
|
4527 |
California, United States |
|
|
|
|
|
Santa Monica Mountains National Recreation Area |
V |
38440 |
California, United States |
|
|
|
|
|
Sequoia and Kings Canyon Biosphere Reserve |
II |
172261 |
California, United States |
|
|
|
|
|
Stanislaus - Tuolumne Biosphere Reserve |
|
1500 |
California, United States |
|
|
|
|
|
University of MI Biosphere Reserve |
|
10003 |
Michigan, United States |
|
|
|
|
|
Whiskey-Shasta-Trinity National Recreation Area |
V |
197791 |
California, United States |
|
|
|
|
|
Yosemite National Park |
II |
95209 |
California, United States |
|
|
|
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Attributes / relations provided by ♦ 1de Magalhaes, J. P., and Costa, J. (2009) A database of vertebrate longevity records and their relation to other life-history traits. Journal of Evolutionary Biology 22(8):1770-1774 ♦ 2Nathan P. Myhrvold, Elita Baldridge, Benjamin Chan, Dhileep Sivam, Daniel L. Freeman, and S. K. Morgan Ernest. 2015. An amniote life-history database to perform comparative analyses with birds, mammals, and reptiles. Ecology 96:3109 ♦ 3Hamish Wilman, Jonathan Belmaker, Jennifer Simpson, Carolina de la Rosa, Marcelo M. Rivadeneira, and Walter Jetz. 2014. EltonTraits 1.0: Species-level foraging attributes of the world's birds and mammals. Ecology 95:2027 ♦ 4Sciurus griseus, Leslie N. Carraway and B. J. Verts, MAMMALIAN SPECIES No. 474, pp. 1-7 (1994) ♦ 5Jorrit H. Poelen, James D. Simons and Chris J. Mungall. (2014). Global Biotic Interactions: An open infrastructure to share and analyze species-interaction datasets. Ecological Informatics. ♦ 6International Flea DatabaseEcoregions provided by World Wide Fund For Nature (WWF). WildFinder: Online database of species distributions, ver. 01.06 Wildfinder Database |
Species taxanomy provided by GBIF Secretariat (2022). GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via GBIF.org on 2023-06-13; License: CC BY 4.0
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