Based on 7,012 research-grade iNaturalist observations in Massachusetts, Mute Swan is most often recorded in April; in Massachusetts it behaves like a year-round resident. It ranks #16 among birds recorded in the state in our data.
Cygnus olor
Mute Swan 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 April

American Robin
Canada Goose

Mallard

Wild Turkey
Red-winged Blackbird

Northern Cardinal

House Sparrow

Black-capped Chickadee
Places to look in Massachusetts
Arnold Arboretum
Boston Public Garden
Berkshire Botanical Garden
Halibut Point State Park
Hammond Pond Reservation
Tolland State Forest
FAQ
When does Mute Swan appear in Massachusetts?
Mainly March–February, with the most records in April.
How common is Mute Swan in Massachusetts?
It ranks #16 by number of iNaturalist observations among birds in Massachusetts (7,012 records in our sample).