Average litter size is 2-3, but litters range between 1 and 7. Young are born naked, weighing between 13-18 g. Eyes open at week 5, and young are weaned at week 8. Sexual maturity is attained at 8 months for females, 10-11 months for males. Behavior Primarily arboreal and diurnal. Generally, fox squirrels are not gregarious, although they come together during the breeding season when females are in estrus.
Males have larger home ranges than females.
Squirrels threaten one another by an upright stance with their tail over their back, followed by a quick flick of the tail. Vocalizations in the form of barks and chatters, distress screams, and high-pitched whines during mating are common. Fox squirrels are serially polygynous. Habitat Fox squirrels are found in a diverse array of deciduous and mixed forest. Areas with a good variety of tree species are preferred due to variability in mast production.