Michigan mammals

North American Porcupine in Michigan

Erethizon dorsatus

Native to Michigan

Not listed as nonindigenous in Michigan by USGS NAS; treated as native to its mapped Michigan 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.

North American Porcupine in Michigan, by the numbers

Common in Michigan 14th most recorded of 75 mammals logged in Michigan

1,018 occurrence records
918 with iNaturalist photos
Jul 11, 2026 Last seen in Michigan

Records from 2000–2026.

1,018 total records count every Michigan occurrence from GBIF and iNaturalist; the map plots a georeferenced sample of 300; the monthly chart covers the 1,012 records with a full observation date.

When to look for the North American Porcupine in Michigan

Most sightings fall in May to June.

1,012 Michigan occurrence records (iNaturalist and GBIF) by month of year, 2000–2026. Shows when the species is recorded, not a guarantee of presence.

Monthly Michigan records (table)
MonthRecords
January20
February36
March43
April78
May234
June183
July139
August85
September75
October57
November35
December27

Monthly north american porcupine occurrence records (iNaturalist and GBIF) in Michigan, 2000–2026.

Seasonality

Year-round in Michigan, with recorded sightings peaking in May–June.

Occurrence map

Where North American Porcupine has been recorded in Michigan

300 records mapped · zoom and drag to explore

300 Michigan records mapped

Notable places to look

Park, forest, or monumentiNaturalist records
University of Michigan Biological Station 54
Sleeping Bear Dunes National Lakeshore 52
Tawas Point State Park 24
Manistee National Forest 13
Ottawa National Forest 13
Gaylord State Forest Area 13
Roscommon State Forest Area 13
Porcupine Mountains Wilderness State Park 9

Protected places with the most north american porcupine 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 Michigan

CountyRecords
Leelanau County 76
Cheboygan County 72
Crawford County 52
Iosco County 39
Emmet County 39
Oscoda County 35
Charlevoix County 34
Ogemaw County 32
Chippewa County 31
Grand Traverse County 26
Mason County 26
Benzie County 25
47 other counties 531

The complete county distribution, spread across 59 Michigan counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

Michigan’s porcupine map tilts north. Of 1,018 records, the heaviest reporting comes from Leelanau, Cheboygan, and Crawford counties and their neighbors, with a long tail into the Upper Peninsula, and the named places read like a northwoods itinerary: Sleeping Bear Dunes National Lakeshore, Negwegon State Park, and the Huron and Manistee national forests.

A slow grazer in the treetops

A porcupine is a climbing herbivore with no need for speed, defended by some 30,000 barbed quills. It waddles more than it runs and does much of its feeding above ground, stripping buds, leaves, and needles in summer and working bark in the cold months. Michigan’s northern forests, where mature timber meets sandy Great Lakes shore, suit it well, and records at Tawas Point State Park and the Gaylord and Roscommon state forest areas trace that wooded belt across the northern Lower Peninsula.

Winter spent on bark

Porcupines do not hibernate. Through a Michigan winter they shelter in rock crevices, hollow logs, or dense conifers, then climb out to feed on the inner bark of hemlock, pine, and hardwoods, sometimes girdling a favored tree. The record’s quiet winter months and strong May and June crest follow the animal’s own shift between sheltering and active feeding.

Status in Michigan

The porcupine is native to Michigan and is not listed as nonindigenous in the state by USGS NAS. It holds no specific listing under Michigan’s state-level conservation framework, and the IUCN lists the species globally as Least Concern.

Occurrence data from iNaturalist and GBIF.

North American Porcupine in other states

View all states →

More mammals in Michigan 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
  • 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"