Based on 4,784 research-grade iNaturalist observations in Massachusetts, Common Eider is most often recorded in January; in Massachusetts it behaves like a year-round resident. It ranks #26 among birds recorded in the state in our data.
Somateria mollissima
Common Eider 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 January
Black-capped Chickadee
Northern Cardinal
Dark-eyed Junco
Mallard
Downy Woodpecker
Red-tailed Hawk
Canada Goose
Tufted Titmouse
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 Common Eider appear in Massachusetts?
Mainly December–November, with the most records in January.
How common is Common Eider in Massachusetts?
It ranks #26 by number of iNaturalist observations among birds in Massachusetts (4,784 records in our sample).