BirdAnalyst
Species · Washington · BBS 2025 Release · 1966–2024

Canvasback Population Trend in Washington

All statesWaterfowl

Canvasback in Washington has declined: down 49% on the route-weighted index since 1986.

-49%Since 1986TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →
7Routes In StateSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
16YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Canvasback Trends in WashingtonNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →

No notable trend signals for Canvasback in Washington. See the full index history below.

Canvasback Survey Routes in Washington

Routes recording Canvasback in Washington.
Recent countThe raw number of individuals recorded on this route in its most recent survey year. A single-route tally, not a trend.Full methodology →
Brewster820121983
Wilbur319881984
Potholes319971997
Twin Lakes219881988
Moses Coulee120232023
Mercer119861986
Keystone120062006

Canvasback Population Trend in Other States

alaskacaliforniacoloradoidahokansasminnesotamontananebraskanevadanew-yorknorth-dakotaoregonsouth-dakotautahwyoming

Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.