Connecticut mammals

Southern Flying Squirrel in Connecticut

Glaucomys volans

Native to Connecticut S5 Secure in Connecticut

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

Southern Flying Squirrel in Connecticut, by the numbers

Occasional in Connecticut 26th most recorded of 70 mammals logged in Connecticut

160 occurrence records
82 with iNaturalist photos
Jun 1, 2026 Last seen in Connecticut

160 total records count every Connecticut occurrence from GBIF and iNaturalist; the map plots a georeferenced sample of 158; the monthly chart covers the 145 records with a full observation date.

When to look for the Southern Flying Squirrel in Connecticut

Most sightings fall in November to January.

145 Connecticut occurrence records (iNaturalist and GBIF) by month of year. Shows when the species is recorded, not a guarantee of presence.

Monthly Connecticut records (table)
MonthRecords
January19
February9
March17
April6
May5
June9
July7
August12
September11
October9
November23
December18

Monthly southern flying squirrel occurrence records (iNaturalist and GBIF) in Connecticut.

Seasonality

Year-round in Connecticut, with recorded sightings peaking in November–January, with a smaller rise in March.

Occurrence map

Where Southern Flying Squirrel has been recorded in Connecticut

158 records mapped · zoom and drag to explore

157 Connecticut records mapped

Notable places to look

Park, forest, or monumentiNaturalist records
Seaside State Park 2
West Rock Ridge State Park 1

Protected places with the most southern 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 Connecticut

CountyRecords
New Haven County 43
Fairfield County 29
Litchfield County 20
Hartford County 19
New London County 17
Tolland County 15
Windham County 7
Middlesex County 4
Other localities 6

The complete county distribution, spread across 8 Connecticut counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

Connecticut’s open databases hold 160 records of the southern flying squirrel, split fairly evenly between iNaturalist and GBIF, a respectable tally for an animal that’s genuinely difficult to see.

Old trees along the shoreline preserves

This squirrel nests in cavities left by woodpeckers and old age, and needs mature hardwood stands to find enough of them. The older oak and hickory forest inside preserves like Hammonasset Beach State Park, Bluff Point State Park, and Barn Island Wildlife Management Area holds more of those cavity trees than younger, more disturbed Connecticut woodland, which is likely why records concentrate there.

A glider that visits yards unseen

Southern flying squirrels are strictly nocturnal, gliding between trees on a fold of skin stretched between their limbs rather than walking the ground the way Connecticut’s gray squirrels do. Many Connecticut households share a yard with the species without ever spotting it, since it forages and glides well after people are asleep, sometimes raiding a bird feeder in the dark and leaving before dawn. In cold weather, several animals often pack into one den cavity together to share body heat, a habit that can bring more than one squirrel into a single tree hole at once.

Status in Connecticut

NatureServe ranks the southern flying squirrel S5, secure, and it’s native throughout Connecticut, most reliably found in the older hardwood stands that still hold enough cavity trees for its dens.

Occurrence data from iNaturalist and GBIF.

More mammals in Connecticut in the atlas

Data & sources

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