Western Gray Squirrel (Sciurus griseus) lives in arboreal across Western North America. It feeds on acorns and nuts. Its conservation status is Least Concern.
Fascinating facts about the Western Gray Squirrel
- A western gray squirrel can tip the scales at a full kilogram. Their weight ranges from about.35 to 1 kilogram (0.77 to 2.20 lb) and they stretch 43 to 61 cm (17 to 24 in) from nose to tail, making them the largest tree squirrel in the Sierra Nevada and Central California.
- When truffle season hits, western gray squirrels become fungal vacuum cleaners, eating enough underground mushrooms to fill half their diet in California. They and. By moving spores to new roots, they help oak forests pull nitrogen from the soil, strengthening the whole woodland.
- A western gray squirrel's drey can be as big as a small wardrobe, measuring 43 to 91 cm (17 to 36 in) long and up to 46 cm (18 in) wide, and is usually tucked into the top third of a tree. The species builds two nest types, a round, covered shelter for winter and rearing young, and a broad platform for seasonal use, both lined with moss, leaves and shredded bark.
- A western gray squirrel's pregnancy lasts just over six weeks, about 44 to 45 days, after which a litter of one to six hairless pups emerges. Females reach sexual maturity at 10 to 11 months, so a year-old female can already be raising a new cohort, keeping populations humming despite high juvenile mortality.
- A mange outbreak can wipe out most of a local squirrel community: in 1926 a mite-driven epidemic nearly erased western gray squirrels in Yosemite Valley, forcing a hunting ban that lasted until the population rebounded in 1946. Later, a Klickitat County flare affected 59 % of recovered squirrels, showing how disease can plunge already fragile groups toward local extinction.
Sources
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At a glance
RangeWestern North America
HabitatArboreal
DietAcorns and nuts
About the Western Gray Squirrel
In the sun-dappled forests of the western coast, the Western Gray Squirrel dances through the trees with effortless agility, its silken gray coat glistening like the mist that veils the dawn. With a flick of its bushy tail, it launches itself from branch to branch, a whimsical acrobat navigating the aerial thoroughfares of its forest realm. As it forages for nuts and seeds, its bright, inquisitive eyes shine like lanterns, illuminating the intricate social hierarchy of this charismatic creature.
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