Based on 3,569 research-grade iNaturalist observations in Illinois, Baltimore Oriole is most often recorded in May; in Illinois it behaves like a seasonal. It ranks #34 among birds recorded in the state in our data.
Icterus galbula
Baltimore Oriole 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 May
Red-winged Blackbird
American Robin
Canada Goose
Mallard
House Sparrow
Northern Cardinal
Gray Catbird
Rose-breasted Grosbeak
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 Baltimore Oriole appear in Illinois?
Mainly May–May, with the most records in May.
How common is Baltimore Oriole in Illinois?
It ranks #34 by number of iNaturalist observations among birds in Illinois (3,569 records in our sample).