Migration & timing
Common Merganser in Oregon
There aren't yet enough observations of Common Merganser in Oregon to describe its timing with confidence.
Sighting 11 observations in Oregon
Check back as more observations come in, or explore Common Merganser across North America.
Common Merganser elsewhere
More birds in Oregon
Data: iNaturalist research-grade observations (CC0 / CC-BY), via GBIF. Excludes eBird.