Based on 3,922 research-grade iNaturalist observations in Massachusetts, Great Black-backed Gull is most often recorded in August; in Massachusetts it behaves like a seasonal. It ranks #31 among birds recorded in the state in our data.
Larus marinus
Great Black-backed Gull in Massachusetts 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 Massachusetts in August
Wild Turkey
Double-crested Cormorant
Great Blue Heron
American Herring Gull
American Goldfinch
Laughing Gull
Semipalmated Plover
Red-tailed Hawk
Places to look in Massachusetts
Botanical GardenArnold Arboretum
Botanical GardenBoston Public Garden
Botanical GardenBerkshire Botanical Garden
State ParkHalibut Point State Park
State ParkHammond Pond Reservation
State ParkTolland State Forest
FAQ
When does Great Black-backed Gull appear in Massachusetts?
Mainly April–January, with the most records in August.
How common is Great Black-backed Gull in Massachusetts?
It ranks #31 by number of iNaturalist observations among birds in Massachusetts (3,922 records in our sample).