Active all year round, the southern flying squirrel will form small groups in the winter and share a common nest to keep warm. Numbers as many as 50 individuals have been found in one nest in winter. The southern flying squirrel is nocturnal, active primarily at night… therefore not often seen by people. In some areas, the southern flying squirrel may actually outnumber the more conspicuous and familiar gray squirrel. They eat nuts (acorns, hickory, etc.), seeds, berries, and insects. They will also eat bird eggs, bird nestlings, insects and occasionally dead mice. Their favorite nuts are pecans.