Based on 1,909 research-grade iNaturalist observations in Maine, Great Blue Heron is most often recorded in August; in Maine it behaves like a summer visitor / breeder. It ranks #11 among birds recorded in the state in our data.
Ardea herodias
Great Blue Heron in Maine 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 Maine in August
American Herring Gull
Double-crested Cormorant
Bald Eagle
Black Guillemot
Common Loon
Common Eider
Mallard
Osprey
Places to look in Maine
State ParkBaxter State Park
State ParkFort Halifax
State ParkTwo Lights State Park
State ParkQuoddy Head State Park
State ParkFort Point State Park
State ParkPopham Beach State Park
FAQ
When does Great Blue Heron appear in Maine?
Mainly June–October, with the most records in August.
How common is Great Blue Heron in Maine?
It ranks #11 by number of iNaturalist observations among birds in Maine (1,909 records in our sample).