Based on 4,500 research-grade iNaturalist observations in Illinois, Bald Eagle is most often recorded in February; in Illinois it behaves like a spring and fall migrant. It ranks #21 among birds recorded in the state in our data.
Haliaeetus leucocephalus
Bald Eagle 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 February
Canada Goose
Northern Cardinal
American Herring Gull
Dark-eyed Junco
Red-tailed Hawk
House Sparrow
Mallard
Common Goldeneye
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 Bald Eagle appear in Illinois?
Mainly August–May, with the most records in February.
How common is Bald Eagle in Illinois?
It ranks #21 by number of iNaturalist observations among birds in Illinois (4,500 records in our sample).