Based on 4,613 research-grade iNaturalist observations in Minnesota, Trumpeter Swan is most often recorded in April; in Minnesota it behaves like a year-round resident. It ranks #12 among birds recorded in the state in our data.
Cygnus buccinator
Trumpeter Swan in Minnesota 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 Minnesota in April

Mallard
Canada Goose

American Robin
Red-winged Blackbird

Yellow-rumped Warbler

Wood Duck

Song Sparrow

Wild Turkey
Places to look in Minnesota
Chippewa National Forest
University of Minnesota Landscape Arboretum
Itasca State Park
Judge C. R. Magney State Park
Superior National Forest
Flandrau State Park
FAQ
When does Trumpeter Swan appear in Minnesota?
Mainly January–October, with the most records in April.
How common is Trumpeter Swan in Minnesota?
It ranks #12 by number of iNaturalist observations among birds in Minnesota (4,613 records in our sample).