Based on 8,072 research-grade iNaturalist observations in Oregon, Canada Goose is most often recorded in April; in Oregon it behaves like a seasonal. It ranks #6 among birds recorded in the state in our data.
Branta canadensis
Canada Goose in Oregon 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 Oregon in April

Mallard

American Robin

White-crowned Sparrow
Red-winged Blackbird

Song Sparrow

Bald Eagle

Dark-eyed Junco

Golden-crowned Sparrow
Places to look in Oregon
National ForestWillamette National Forest
Mount Hood National Forest
National ForestDeschutes National Forest
Hoyt Arboretum
Leach Botanical Garden
Umatilla National Forest
FAQ
When does Canada Goose appear in Oregon?
Mainly February–July, with the most records in April.
How common is Canada Goose in Oregon?
It ranks #6 by number of iNaturalist observations among birds in Oregon (8,072 records in our sample).