Based on 3,659 research-grade iNaturalist observations in Wisconsin, Eastern Chipmunk is most often recorded in May; in Wisconsin it behaves like a summer visitor / breeder. It ranks #4 among mammals recorded in the state in our data.
Tamias striatus
Eastern Chipmunk in Wisconsin 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 Wisconsin in May
White-tailed Deer
Eastern Cottontail
Eastern Gray Squirrel
Muskrat
Common Raccoon
American Red Squirrel
Red Fox
Thirteen-lined Ground Squirrel
Places to look in Wisconsin
State ParkAztalan State Park
State ParkWyalusing State Park
National ForestChequamegon–Nicolet National Forest
State ParkMerrick State Park
State ParkPerrot State Park
State ParkLake Kegonsa State Park
FAQ
When does Eastern Chipmunk appear in Wisconsin?
Mainly April–September, with the most records in May.
How common is Eastern Chipmunk in Wisconsin?
It ranks #4 by number of iNaturalist observations among mammals in Wisconsin (3,659 records in our sample).