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Species · Washington · BBS 2025 Release · 1966–2024

Eastern Kingbird Population Trend in Washington

All statesAerial insectivores

Eastern Kingbird in Washington has declined: down 45% on the route-weighted index since 1970.

-45%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 →
56YearsYears 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 rise about 13% by 2029 — from 1.2 in 2024 to a central estimate of 1.3 (95% range 0.60–2.1). A 5-year backtest shows a typical error of ±21.3%, with 100% of held-out values landing inside the 95% band.

+13%Change by 2029TrendPercent 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 2029 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.60–2.195% 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 →
±21.3%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 rise about 13% by 2029 — from 1.2 in 2024 to a central estimate of 1.3 (95% range 0.60–2.1). A 5-year backtest shows a typical error of ±21.3%, with 100% of held-out values landing inside the 95% band.19682029
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 →
20251.30.612.1
20261.30.612.1
20271.30.602.1
20281.30.602.1
20291.30.602.1

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 →
Ewan 21620242023
Brewster1220151977
Turnbull Nwr1220231993
Wapato1220141975
Ewan1120191983
Laurier1120221996
Yakima1020241993
Horn Rapids820242005
Chewelah720211977
Nighthawk620241992
Columbia Nwr520221992
Mesa520081994
Newhalem420241969
Twisp420241969
Ellensburg420241981
Pomeroy420241993
Keller320071968
Hanford Site319961988
Moses Lake320221974
Reardan320241968
Asotin320241983
Tonasket320181982
Sulphur320152015
Packwood319821982
Othello319911983

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 2026-05-22.