Based on 3,285 research-grade iNaturalist observations in Pennsylvania, Brown-headed Cowbird is most often recorded in April; in Pennsylvania it behaves like a seasonal. It ranks #38 among birds recorded in the state in our data.
Molothrus ater
Brown-headed Cowbird in Pennsylvania 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 Pennsylvania in April
American Robin
Red-winged Blackbird
Northern Cardinal
Canada Goose
Mourning Dove
Mallard
White-throated Sparrow
House Sparrow
Places to look in Pennsylvania
National ForestAllegheny National Forest
State ParkPresque Isle State Park
Botanical GardenJenkins Arboretum
State ParkCherry Springs State Park
State ParkColton Point State Park
State ParkLeonard Harrison State Park
FAQ
When does Brown-headed Cowbird appear in Pennsylvania?
Mainly April–June, with the most records in April.
How common is Brown-headed Cowbird in Pennsylvania?
It ranks #38 by number of iNaturalist observations among birds in Pennsylvania (3,285 records in our sample).