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Species · Washington · BBS 2026 Release · 1966–2025

Eastern Kingbird Population Trend in Washington

All statesAerial insectivores

Eastern Kingbird in Washington has declined: down 43% on the route-weighted index since 1970.

-43%Since 1970TrendPercent 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 →
62Routes 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 →
57YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Eastern Kingbird 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 Eastern Kingbird in Washington. See the full index history below.

Eastern Kingbird Population Forecast in Washington

If the recent trend holds, Eastern Kingbird in Washington is projected to stay roughly flat through 2030, near 1.3 (95% range 0.60–2.0). A 5-year backtest shows a typical error of ±16.4%, with 100% of held-out values landing inside the 95% band.

+2%Change by 2030TrendPercent 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 →
1.3Projected 2030 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.60–2.095% range95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
±16.4%Backtest errorBacktest errorTypical error when we hold out the most recent years, forecast them, and compare to what actually happened. Lower means a more trustworthy projection.Full methodology →
If the recent trend holds, Eastern Kingbird in Washington is projected to stay roughly flat through 2030, near 1.3 (95% range 0.60–2.0). A 5-year backtest shows a typical error of ±16.4%, with 100% of held-out values landing inside the 95% band.19682030
Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.
YearProjected indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →95% low95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →95% high95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
20261.30.612.1
20271.30.612.1
20281.30.602.1
20291.30.602.0
20301.30.602.0

Eastern Kingbird Survey Routes in Washington

Routes recording Eastern Kingbird 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 →
Nighthawk1620251992
Brewster1220151977
Turnbull Nwr1220231993
Wapato1220141975
Ewan1120191983
Ewan 21020252023
Horn Rapids820242005
Yakima820251993
Chewelah720211977
Malden620251998
Laurier620251996
Columbia Nwr520221992
Mesa520081994
Newhalem420241969
Twisp420241969
Wilbur420251983
Pomeroy420241993
Keller320071968
Hanford Site319961988
Moses Lake320221974
Asotin320241983
Tonasket320181982
Sulphur320152015
Packwood319821982
Ellensburg320251981

Eastern Kingbird Population Trend in Other States

alabamaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawest-virginiawisconsinwyoming

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14.