Despite their name, flying squirrels not actually capable of powered flight. Instead, they use a furry patch of skin between their wrists and ankles as a sort of parachute, allowing them to glide hundreds of feet between trees.
Unlike ground squirrels and tree squirrels, flying squirrels are almost completely nocturnal. This behavior is one of necessity as they are unable to escape from large birds of prey such as hawks and eagles during the day. However, they are still exposed to predation from several species of owls at night.