It is a rare sight to see one gliding through the blue sky with its body parachute. Flying squirrel droppings look like little pellets. 2. Also, the northern flying squirrel has a gray belly fur. Southern flying squirrels are 8 to 10 inches and weigh between 4-6oz. Southern flying squirrel the belly coat is all white. Southern Flying Squirrel. While northern flying squirrels are 10 to 12 inches. Flying squirrels are found in deciduous and coniferous forests as well as woodlands. Flying squirrels are one the most unique furry friends that exists in North America. Since flying squirrel droppings are linked to the spread of typhus, which causes headaches, fevers, and rashes, individuals should be very cautious when they find the pests' fecal matter. Just like other squirrels, the flying squirrel has a fluffy tail that it uses for balance, and especially comes in handy to stabilize while flying. They are typically brown or black in color and may be moist if fresh.