The Northern flying squirrel (Glaucomys sabrinus) is one of two species of the genus Glaucomys, the only flying squirrels found in North America (the other is the somewhat smaller Southern flying squirrel, G. volans). Unlike most members of their family, flying squirrels are strictly nocturnal. The Northern flying squirrel is found in coniferous and mixed forests across the top of North America, from Alaska to Nova Scotia, south to the mountains of North Carolina and west...