Based on 7,607 research-grade iNaturalist observations in Wisconsin, Mallard is most often recorded in April; in Wisconsin it behaves like a seasonal. It ranks #1 among birds recorded in the state in our data.
Anas platyrhynchos
Mallard 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 April
American Robin
Canada Goose
Red-winged Blackbird
Northern Cardinal
Wild Turkey
Sandhill Crane
Mourning Dove
Song Sparrow
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 Mallard appear in Wisconsin?
Mainly March–October, with the most records in April.
How common is Mallard in Wisconsin?
It ranks #1 by number of iNaturalist observations among birds in Wisconsin (7,607 records in our sample).