Based on 2,550 research-grade iNaturalist observations in Oregon, American Beaver is most often recorded in April; in Oregon it behaves like a year-round resident. It ranks #11 among mammals recorded in the state in our data.
Castor canadensis
American Beaver 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
Mule Deer
Douglas's Ground Squirrel
Belding's Ground Squirrel
Coypu
Eastern Gray Squirrel
Eastern Fox Squirrel
Coyote
Townsend's Chipmunk
Places to look in Oregon
National ForestWillamette National Forest
National ForestMount Hood National Forest
National ForestDeschutes National Forest
Botanical GardenHoyt Arboretum
Botanical GardenLeach Botanical Garden
National ForestUmatilla National Forest
FAQ
When does American Beaver appear in Oregon?
Mainly March–February, with the most records in April.
How common is American Beaver in Oregon?
It ranks #11 by number of iNaturalist observations among mammals in Oregon (2,550 records in our sample).