Based on 3,672 research-grade iNaturalist observations in Illinois, Eastern Fox Squirrel is most often recorded in April; in Illinois it behaves like a spring and fall migrant. It ranks #6 among mammals recorded in the state in our data.
Sciurus niger
Eastern Fox Squirrel 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 Chipmunk
Muskrat
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 Eastern Fox Squirrel appear in Illinois?
Mainly August–May, with the most records in April.
How common is Eastern Fox Squirrel in Illinois?
It ranks #6 by number of iNaturalist observations among mammals in Illinois (3,672 records in our sample).