Red squirrels remain active throughout the winter and live in their established territories. They do not hibernate but may stay in their nests for more extended periods during extremely cold or inclement weather. During the winter months, red squirrels rely heavily on the food caches they have stored in the fall, which consist of nuts, seeds, and other available food items. Their dreys, or nests, provide necessary shelter from the winter elements. Red squirrels’ fur becomes thicker in colder regions, providing additional insulation. Their ability to survive harsh winter conditions is a testament to their adaptability and resilience in various environments.