Based on 6,656 research-grade iNaturalist observations in Illinois, Ring-billed Gull is most often recorded in March; in Illinois it behaves like a year-round resident. It ranks #13 among birds recorded in the state in our data.
Larus delawarensis
Ring-billed 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 March
American Robin
Canada Goose
Mallard
Northern Cardinal
Red-winged Blackbird
House Sparrow
Dark-eyed Junco
Song Sparrow
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 Ring-billed Gull appear in Illinois?
Mainly February–January, with the most records in March.
How common is Ring-billed Gull in Illinois?
It ranks #13 by number of iNaturalist observations among birds in Illinois (6,656 records in our sample).