Based on 2,506 research-grade iNaturalist observations in Minnesota, American Beaver is most often recorded in April; in Minnesota it behaves like a spring and fall migrant. It ranks #6 among mammals recorded in the state in our data.
Castor canadensis
American Beaver in Minnesota by month
Bars show research-grade observations per month. They mix true seasonality with how often people are outdoors, so treat small numbers with caution.
Also seen in Minnesota in April

White-tailed Deer

Eastern Gray Squirrel

Muskrat

Eastern Cottontail

American Red Squirrel
Eastern Chipmunk

Common Raccoon
Coyote
Places to look in Minnesota
Chippewa National Forest
University of Minnesota Landscape Arboretum
Itasca State Park
Judge C. R. Magney State Park
Superior National Forest
Flandrau State Park
FAQ
When does American Beaver appear in Minnesota?
Mainly March–June, with the most records in April.
How common is American Beaver in Minnesota?
It ranks #6 by number of iNaturalist observations among mammals in Minnesota (2,506 records in our sample).