Based on 10,277 research-grade iNaturalist observations in Pennsylvania, Great Blue Heron is most often recorded in August; in Pennsylvania it behaves like a seasonal. It ranks #7 among birds recorded in the state in our data.
Ardea herodias
Great Blue Heron 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 August
Ruby-throated Hummingbird
American Goldfinch
Great Egret
Osprey
Red-tailed Hawk
Gray Catbird
Mourning Dove
Mallard
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 Great Blue Heron appear in Pennsylvania?
Mainly April–December, with the most records in August.
How common is Great Blue Heron in Pennsylvania?
It ranks #7 by number of iNaturalist observations among birds in Pennsylvania (10,277 records in our sample).