Gray Squirrels

Hoarders by nature and armed with an excellent spatial memory and sense of smell, gray squirrels are capable of making and remembering several thousand caches per season. These intelligent critters aren’t too picky about what they eat, choosing to feed on a variety of nuts, seeds, bulbs, insects, fruit, tree bark, buds, acorns, fungi, vegetables, and even insects, frogs and small nesting birds. Though they do not hibernate or venture out during the heat of the day, gray squirrels tend to be most active during the early and late hours of the day.

Squirrel nesting behavior can often be seen in the wild, where squirrels construct nests out of leaves and dry twigs in the cavities of oak and hickory trees. Due to their large populations, gray squirrels are known for seeking shelter in human structures during the coldest months of the year. Looking for warmth in late fall and winter, squirrels often nest in attics and exterior walls, using insulation as nesting material.

Gray squirrels typically have two litters per year, one in late summer and one in early spring, ranging from two to six pups. These pups will leave the nest after 12 weeks, or will sometimes spend the winter with the mother if born in the fall. Gray squirrels are often regarded as an invasive species due to their propensity for overpopulation.

Gray squirrels can do considerable damage to exterior trim and siding as they widen or create new ways to enter structures. Once inside, they will gnaw on electrical wiring — causing shorts and even fires. Squirrels may also carry fleas and other unwanted organisms that can infest a structure long after the squirrels themselves have come and gone.