Mature trees and natural cavities define Pennsylvania’s southern flying-squirrel habitat across Allegheny National Forest, Ricketts Glen’s older ravine woods, and the connected slopes of Delaware Water Gap. Its nighttime habits keep it inconspicuous even where that cover is suitable.
No month dominates the record. Nest-box checks, chance nighttime views, and search location control many detections, so scattered timing does not mean equal visibility all year.
