Massachusetts sits near the southern edge of the northern flying squirrel’s range, and the state’s record reads like edge country. Reports cluster in Middlesex and Worcester counties, the wooded belt west of Boston, with a scatter westward into Hampden and Franklin. Records map where observers and trappers have worked, though, so a thin tally in the Berkshires shouldn’t be read as proof the squirrel is absent.
The monthly spread is wide but shallow, with reports in every season and the largest single bump in October. A year-round presence fits an animal that doesn’t hibernate and keeps gliding between trees on the coldest January nights. Cool autumn evenings also bring out more of the people doing the looking, and the October rise probably owes something to both sides of that equation.
NatureServe ranks the squirrel S2, imperiled in Massachusetts, even though the species is secure across its full range. That gap between global comfort and local scarcity is the real story here. Mature conifer and hemlock-hardwood stands are what hold it in the state, and the squirrel turns up where that older forest is still standing.
Full species profile
