
Based on 2,254 research-grade iNaturalist observations in Wisconsin, Common Grackle is most often recorded in May; in Wisconsin it behaves like a seasonal. It ranks #24 among birds recorded in the state in our data.
Quiscalus quiscula
Common Grackle in Wisconsin 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 Wisconsin in May
Red-winged Blackbird

American Robin

Baltimore Oriole
Canada Goose

Mallard

Rose-breasted Grosbeak
Gray Catbird
Sandhill Crane
Places to look in Wisconsin
Aztalan State Park
Wyalusing State Park
Chequamegon–Nicolet National Forest
Merrick State Park
Perrot State Park
Lake Kegonsa State Park
FAQ
When does Common Grackle appear in Wisconsin?
Mainly March–June, with the most records in May.
How common is Common Grackle in Wisconsin?
It ranks #24 by number of iNaturalist observations among birds in Wisconsin (2,254 records in our sample).