Based on 3,937 research-grade iNaturalist observations in Washington, Common Merganser is most often recorded in March; in Washington it behaves like a year-round resident. It ranks #32 among birds recorded in the state in our data.
Mergus merganser
Common Merganser in Washington 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 Washington in March
Places to look in Washington
National ForestGifford Pinchot National Forest
National ForestOlympic National Forest
State ParkPeace Arch Park
National ForestColville National Forest
National ForestMount Baker–Snoqualmie National Forest
Botanical GardenBellevue Botanical Garden
FAQ
When does Common Merganser appear in Washington?
Mainly November–July, with the most records in March.
How common is Common Merganser in Washington?
It ranks #32 by number of iNaturalist observations among birds in Washington (3,937 records in our sample).