How Does A Squirrel Prepare For The Winter Months?
While you may not notice it on cold winter days, you may be surprised to see your favorite furry friend hanging out. Though squirrels do not hibernate during the cold months, they sleep more. They come out to eat when the weather is mild. However, the cold months do make squirrels bulk up. They spend the fall and early winter months eating seeds, berries, and nuts to store fat for warmth.
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Grey squirrels don’t hibernate
You may be surprised to learn that gray squirrels do not hibernate during the winter months. Although other squirrels, like ground squirrels, spend the winter months in a den to stay warm, grey squirrels are not hibernators. Although they do spend less time outside during the colder months, they remain active by building a larger winter drey. This allows them to stay active during the colder months, but when weather conditions are bad, they tend to stay in their dreys.
Most people believe that squirrels hibernate in the winter. This isn’t true! While they do not hibernate, they do spend a lot of time in their burrows or nests to keep warm. When the weather gets cold and stormy, they tend to stay inside their nests. These nests are interiors that provide a more comfortable environment than a nest made of leaves. In the spring, they may leave the nest to feed.
Gray squirrels shiver to keep warm
When the weather gets cold, gray squirrels huddle together in their dens. They typically create nests in tree hollows. Although they do not hibernate, they do spend much of the winter months in their dens. This helps keep them warm and safe. When temperatures drop below freezing, they will shiver in order to keep warm. Even if they do not hibernate, they can sometimes be found in urban areas.
During the fall, grey squirrels store up food to survive the winter. By storing food, they are able to preserve their body heat. Their shivering helps them maintain a constant body temperature. Squirrels are homeotherms, meaning that their bodies regulate the production and loss of heat. While humans cannot regulate the body’s temperature, squirrels do.
Ground squirrels stay in their nests
While many animals like the fox and rabbit spend the winter months in a secluded hole, the ground squirrel does not. These animals stay in their nests to prepare for the cold season by fattening up, building a nest, and storing food. Ground squirrels spend most of the day in the nest, only leaving the nest to gather food. If you find a lifeless ground squirrel outside your home, consider that it might have been hibernating.
In severe cold, ground squirrels will stay in their nests for several days and change their daily habits to survive. They come out during midday when the temperature is slightly warmer. In winter, ground squirrels often supplement their diet with berries, insects, bird’s eggs, and mushrooms. In southern Canada, the eastern gray squirrel will begin gathering nuts in the fall and will use its sharp sense of smell and memory to find the food.
Ground squirrels store food
Ground squirrels store food for the winter months using cheek pouches. These pouches are filled with a variety of foods, including seeds and nuts. In addition to their normal diet of leaves, plants, and caterpillars, they also eat insect larvae, bird eggs, and frogs. To keep themselves warm during the colder months, ground squirrels will keep food in the pouches for up to a year.
In the cooler months, ground squirrels may burrow food in your lawn or around the nest to store food for the winter. During the coldest months, ground squirrels can hibernate and bury their food. They also dig nests or stash food near their dens in order to keep warm. If you are a tree-dwelling homeowner, you may even see ground squirrels in your yard or garden, but don’t panic if you don’t see any signs of life.
How does a squirrel prepare for the winter months?
By storing food and gathering supplies.

Jessica Watson is a PHD holder from the University of Washington. She studied behavior and interaction between squirrels and has presented her research in several wildlife conferences including TWS Annual Conference in Winnipeg.