Based on 3,661 research-grade iNaturalist observations in Wisconsin, Great Blue Heron is most often recorded in August; in Wisconsin it behaves like a summer visitor / breeder. It ranks #14 among birds recorded in the state in our data.
Ardea herodias
Great Blue Heron 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 August
Sandhill Crane
American Goldfinch
Wild Turkey
Mallard
Ruby-throated Hummingbird
Green Heron
Cedar Waxwing
Bald Eagle
Places to look in Wisconsin
State ParkAztalan State Park
State ParkWyalusing State Park
National ForestChequamegon–Nicolet National Forest
State ParkMerrick State Park
State ParkPerrot State Park
State ParkLake Kegonsa State Park
FAQ
When does Great Blue Heron appear in Wisconsin?
Mainly April–October, with the most records in August.
How common is Great Blue Heron in Wisconsin?
It ranks #14 by number of iNaturalist observations among birds in Wisconsin (3,661 records in our sample).