Based on 1,530 research-grade iNaturalist observations in Oregon, California Sea Lion is most often recorded in March; in Oregon it behaves like a seasonal. It ranks #16 among mammals recorded in the state in our data.
Zalophus californianus
California Sea Lion 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 March
Coypu
Douglas's Ground Squirrel
Mule Deer
Eastern Fox Squirrel
Eastern Gray Squirrel
North American Porcupine
American Beaver
Common Raccoon
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 California Sea Lion appear in Oregon?
Mainly August–June, with the most records in March.
How common is California Sea Lion in Oregon?
It ranks #16 by number of iNaturalist observations among mammals in Oregon (1,530 records in our sample).