Based on 3,139 research-grade iNaturalist observations in Pennsylvania, Common Merganser is most often recorded in March; in Pennsylvania it behaves like a winter visitor. It ranks #39 among birds recorded in the state in our data.
Mergus merganser
Common Merganser 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 March
American Robin
Northern Cardinal
Canada Goose
Mourning Dove
Mallard
Song Sparrow
Dark-eyed Junco
Red-winged Blackbird
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 Common Merganser appear in Pennsylvania?
Mainly January–April, with the most records in March.
How common is Common Merganser in Pennsylvania?
It ranks #39 by number of iNaturalist observations among birds in Pennsylvania (3,139 records in our sample).