![]() ![]() ![]() Two or three young are born after a gestation period of about six weeks. A leaf nest, tree cavity or humanmade nest box may be used to rear the young. Females are often chased by the males at this time and may “bark” while being pursued. Females about one year old usually breed once in a year. Females two years old and older produce two litters per year. Mating occurs in January and again in June and July. Its call is “kuk-kuk-cut-cut-cut.” This animal builds a leaf nest in the high branches of a tree but may use a tree cavity for escape from predators and poor weather and for raising its young. It may sleep for several consecutive days in winter, however. Tree squirrel species will go into a period of winter rest. The eastern gray squirrel does not hibernate and is active during the day year round. Ground squirrels are the only type of squirrel that will hibernate during winter. Urban squirrels are good at climbing brick walls and walking along wires and cables. ![]() It is primarily arboreal, and its large, bushy tail helps it balance while climbing and resting in trees. This squirrel grasps food in its front paws. The gray squirrel eats buds, leaves, fruits, berries, fungi, pecans, acorns, hickory nuts, tree bark, walnuts and the seeds of various other trees. Here, they live in trees without the conditions described above. However, gray squirrels are common in cities. As these mature forests have been destroyed in Illinois, the population of gray squirrels has declined. It lives in woods or forests that have a closed canopy, nut-bearing trees and plenty of cavity trees. First of all, it is really hard to wake an animal who is hibernating. Animals who hibernate do so in order to survive the harsh winter temperature by reducing their metabolism rate and conserving their energy. The eastern gray squirrel may be found statewide in Illinois. However, they have a high sleeping rate and their sleep is quite deep. ![]()
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