Maine mammals

Northern Flying Squirrel in Maine

Glaucomys sabrinus

Native to Maine S5 Secure in Maine

Not listed as nonindigenous in Maine by USGS NAS; native to its Maine 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 Maine, by the numbers

Occasional in Maine 42nd most recorded of 85 mammals logged in Maine

146 occurrence records
36 with iNaturalist photos
Feb 23, 2026 Last seen in Maine

Records from 2000–2026.

146 total records count every Maine occurrence from GBIF and iNaturalist; the monthly chart covers the 117 records with a full observation date.

When to look for the Northern Flying Squirrel in Maine

Most sightings fall in November to December.

117 Maine occurrence records (iNaturalist and GBIF) by month of year, 2000–2026. Shows when the species is recorded, not a guarantee of presence.

Monthly Maine records (table)
MonthRecords
January8
February5
March10
April2
May8
June7
July8
August16
September7
October9
November19
December18

Monthly northern flying squirrel occurrence records (iNaturalist and GBIF) in Maine, 2000–2026.

Seasonality

Year-round in Maine, with recorded sightings peaking in November–December, with a smaller rise in August.

Occurrence map

Where Northern Flying Squirrel has been recorded in Maine

146 records mapped · zoom and drag to explore

146 Maine records mapped

Notable places to look

Park, forest, or monumentiNaturalist records
Baxter State Park 6
Baring Wilderness Area 4
Cupsuptic Lake Park 1
Acadia National Park 1
Kennebunk Plains 1

Protected places with the most northern flying squirrel sightings, from the USGS Protected Areas Database plus named mountain ranges, good spots to look, not a full breakdown, so they don't sum to the total.

Where it's recorded in Maine

CountyRecords
Cumberland County 26
Piscataquis County 24
Oxford County 21
Penobscot County 14
Washington County 12
Kennebec County 12
Aroostook County 10
Hancock County 9
Somerset County 5
York County 3
Sagadahoc County 3
Franklin County 2
2 other counties 5

The complete county distribution, spread across 14 Maine counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

Northern flying squirrels show up in 146 Maine records, a modest count for a nocturnal glider that’s genuinely widespread across the state’s northern forest but rarely seen by anyone not specifically looking for it after dark.

Cool conifer canopy, not just any woods

This squirrel depends on cool, dense conifer and mixed forest, exactly the spruce-fir cover that dominates Maine’s North Woods and rises up Katahdin’s slopes inside Baxter State Park. Farther south in its range, the species survives only in isolated high-elevation pockets, but Maine’s colder climate lets it use both mountain forest and lower ground, which likely explains why records reach from Baxter down to the coast rather than clustering at one elevation.

Winter nights, not winter sleep

Records don’t drop off in the cold months the way a hibernator’s would. Maine’s data actually shows a late-year rise in November and December. Northern flying squirrels stay active through winter, gliding between trees on long, dark nights and sometimes turning up at bird feeders when natural food runs short. That combination of longer nights and feeder visits likely makes the species easier to record in early winter than during the brighter, quieter stretch of late spring.

Status in Maine

NatureServe ranks the northern flying squirrel S5 in Maine, secure, and it’s native throughout the state’s forested range. Fungi make up a large part of its diet, and by spreading fungal spores as it forages, this squirrel does quiet ecological work for Maine’s conifer forests that has nothing to do with how often anyone happens to see it glide.

Occurrence data from iNaturalist and GBIF.

More mammals in Maine 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
  • Natural Earthpublic domainthe relief basemap
  • USFSpublic domainnational-forest boundaries
  • USGS Protected Areas Databasepublic domainthe named parks, forests, and refuges behind "notable places to look"