Based on 4,179 research-grade iNaturalist observations in Illinois, American Herring Gull is most often recorded in February; in Illinois it behaves like a winter visitor. It ranks #26 among birds recorded in the state in our data.
Larus smithsonianus
American Herring Gull 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
Dark-eyed Junco
Red-tailed Hawk
House Sparrow
Mallard
Common Goldeneye
Downy Woodpecker
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 American Herring Gull appear in Illinois?
Mainly December–March, with the most records in February.
How common is American Herring Gull in Illinois?
It ranks #26 by number of iNaturalist observations among birds in Illinois (4,179 records in our sample).