Maine mammals

American Black Bear in Maine

Ursus americanus

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.

American Black Bear in Maine, by the numbers

Common in Maine 15th most recorded of 85 mammals logged in Maine

363 occurrence records
322 with iNaturalist photos
Jun 24, 2026 Last seen in Maine

Records from 2000–2026.

363 total records count every Maine occurrence from GBIF and iNaturalist; the map plots a georeferenced sample of 300; the monthly chart covers the 340 records with a full observation date.

Field encounter

Where and when you're most likely to encounter an American Black Bear

Most active: Maine, in May to August.

Where
MaineME
When
May to August

Observe from a distance and give it room. Never approach, corner, or feed one.

When to be most aware of the American Black Bear in Maine

Most sightings fall in May to August.

340 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
January2
February5
March4
April7
May57
June71
July50
August64
September34
October29
November14
December3

Monthly american black bear occurrence records (iNaturalist and GBIF) in Maine, 2000–2026.

Seasonality

Year-round in Maine, with recorded sightings peaking in May–August.

Occurrence map

Where American Black Bear has been recorded in Maine

300 records mapped · zoom and drag to explore

300 Maine records mapped

Where american black bear encounters are recorded

Park, forest, or monumentiNaturalist records
Katahdin Woods and Waters National Monument 40
Baxter State Park 9
Baxter State Park Scientific Management Area 7
Acadia National Park 4
Mount Katahdin 3
Appalachian National Scenic Trail 2
Baxter Matrix Block - Baxter Park Addition 2
Fay Hyland Bog 1

Protected places with the most american black bear records, from the USGS Protected Areas Database plus named mountain ranges, where encounters are most often recorded, not a full breakdown, so they don't sum to the total. Keep your distance and never approach one.

Where it's recorded in Maine

CountyRecords
Penobscot County 94
Aroostook County 65
Piscataquis County 55
Oxford County 44
Hancock County 28
Washington County 25
Franklin County 12
Somerset County 10
York County 5
Knox County 4
Lincoln County 4
Waldo County 4
4 other counties 13

The complete county distribution, spread across 16 Maine counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

Maine’s 363 black bear records reach all sixteen counties, but the weight sits in the big woods: Penobscot, Aroostook, and Piscataquis counties, and the Katahdin country around Baxter State Park and Katahdin Woods and Waters National Monument.

A state still made of bear country

Maine holds one of the largest black bear populations in the eastern United States, and the record’s shape shows why: the state is still mostly forest, with spruce-fir and hardwood cover running nearly unbroken across the north and west. Bears work through that country on sedges and insects in spring, berries in summer, and beechnuts and other mast in fall, and the population reaches the coast too, with records from Acadia National Park’s island forests. Even so, a bear in Maine is heard about far more often than seen; the woods are thick, and the animal avoids people as a matter of habit.

Active months, quiet months

Reports swell from May through August, the stretch when bears are breeding and feeding in the open after denning, then taper into autumn as they turn to fall mast and prepare their dens. Winter records are nearly absent; a Maine bear in January is asleep. The summer peak is a fact of the bear’s year, not an invitation, and a person walking in bear country in July is still unlikely to see one, because a bear that hears people coming usually leaves first.

Status in Maine

NatureServe ranks the American black bear S5, Secure, in Maine, and the species is native to its Maine range. USGS NAS does not list it as nonindigenous in the state.

Occurrence data from iNaturalist and GBIF.

American Black Bear in other states

View all states →

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"