You are watching live video from a Gray Squirrel nest box. Gray squirrels build a nest known as a "drey". Nests can be found in the forks of trees, hollowed out tree trunks, nest boxes and more. Nests consist mainly of dry leaves and twigs. Males and females may share the same nest for short times during the breeding season and during cold winter spells squirrels may share a drey to stay warm. Gray squirrels are crepuscular(more active early and late in the day). They do not hibernate.