
Based on 2,606 research-grade iNaturalist observations in Washington, Ring-billed Gull is most often recorded in September; in Washington it behaves like a seasonal. It ranks #56 among birds recorded in the state in our data.
Larus delawarensis
Ring-billed Gull 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 September

Great Blue Heron

Mallard

American Crow

Song Sparrow

Dark-eyed Junco

Steller's Jay

Northern Flicker

White-crowned Sparrow
Places to look in Washington
Gifford Pinchot National Forest
Olympic National Forest
Peace Arch Park
Colville National Forest
Mount Baker–Snoqualmie National Forest
Bellevue Botanical Garden
FAQ
When does Ring-billed Gull appear in Washington?
Mainly July–May, with the most records in September.
How common is Ring-billed Gull in Washington?
It ranks #56 by number of iNaturalist observations among birds in Washington (2,606 records in our sample).