Based on 1,999 research-grade iNaturalist observations in Illinois, Muskrat is most often recorded in April; in Illinois it behaves like a seasonal. It ranks #9 among mammals recorded in the state in our data.
Ondatra zibethicus
Muskrat in Illinois 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 Illinois in April
Eastern Gray Squirrel
Eastern Cottontail
White-tailed Deer
Common Raccoon
Eastern Fox Squirrel
Eastern Chipmunk
American Beaver
Virginia Opossum
Places to look in Illinois
State ParkCahokia
Botanical GardenMorton Arboretum
National ForestShawnee National Forest
Botanical GardenChicago Botanic Garden
Botanical GardenLadd Arboretum
State ParkStarved Rock State Park
FAQ
When does Muskrat appear in Illinois?
Mainly March–August, with the most records in April.
How common is Muskrat in Illinois?
It ranks #9 by number of iNaturalist observations among mammals in Illinois (1,999 records in our sample).