Based on 10,425 research-grade iNaturalist observations in Illinois, White-tailed Deer is most often recorded in April; in Illinois it behaves like a year-round resident. It ranks #2 among mammals recorded in the state in our data.
Odocoileus virginianus
White-tailed Deer 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
Common Raccoon
Eastern Fox Squirrel
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 White-tailed Deer appear in Illinois?
Mainly March–February, with the most records in April.
How common is White-tailed Deer in Illinois?
It ranks #2 by number of iNaturalist observations among mammals in Illinois (10,425 records in our sample).