Massachusetts mammals

Northern Flying Squirrel in Massachusetts

Glaucomys sabrinus

Native to Massachusetts S2 Imperiled in Massachusetts

Not listed as nonindigenous in Massachusetts by USGS NAS; native to its Massachusetts range.

IUCN Red List status

  1. LC
  2. NT
  3. VU
  4. EN
  5. CR
  6. EW
  7. EX

LC – Least Concern

Widespread and abundant; not at risk.

Northern Flying Squirrel in Massachusetts, by the numbers

Rare in Massachusetts 87th most recorded of 93 mammals logged in Massachusetts

Records from 2000–2026.

Seasonality

No dated Massachusetts records from 2000 to 2026.

Massachusetts sits near the southern edge of the northern flying squirrel’s range, and no Massachusetts records fall between 2000 and 2026. Records map where observers and trappers have worked, though, so an empty tally shouldn’t be read as proof the squirrel is absent.

It’s an easy animal to miss. It doesn’t hibernate and keeps gliding between trees on the coldest January nights, but it does nearly all of that in the dark, high in the canopy.

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 depends on that older forest wherever it still stands.

Occurrence data from GBIF.

More mammals in Massachusetts in the atlas

Data & sources

The data and visualizations on this page draw on these open sources:

  • GBIFCC-BY 4.0occurrence records behind the range map, elevation, and record counts
  • iNaturalistCC0 / CC-BY / CC-BY-SAobservations, photos, and audio recordings
  • NatureServe ExplorerCC-BYthe state conservation rank
  • IUCN Red Listattributed factthe global conservation status
  • USGS NASpublic domainnative / introduced status