
Based on 4,799 research-grade iNaturalist observations in Maine, American Herring Gull is most often recorded in August; in Maine it behaves like a summer visitor / breeder. It ranks #1 among birds recorded in the state in our data.
Larus smithsonianus
American Herring Gull 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

Double-crested Cormorant

Bald Eagle

Black Guillemot

Great Blue Heron
Common Loon

Common Eider

Mallard

Osprey
Places to look in Maine
Baxter State Park
State ParkFort Halifax
State ParkTwo Lights State Park
Quoddy Head State Park
Fort Point State Park
Popham Beach State Park
FAQ
When does American Herring Gull appear in Maine?
Mainly May–October, with the most records in August.
How common is American Herring Gull in Maine?
It ranks #1 by number of iNaturalist observations among birds in Maine (4,799 records in our sample).