BirdAnalyst
Species · Wisconsin · BBS 2026 Release · 1966–2025

Eastern Kingbird Population Trend in Wisconsin

All statesAerial insectivores

Eastern Kingbird in Wisconsin has declined: down 30% on the route-weighted index since 1968.

-30%Since 1968TrendPercent 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 →
98Routes 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 →
59YearsYears 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 WisconsinNotable 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 Wisconsin. See the full index history below.

Eastern Kingbird Population Forecast in Wisconsin

If the recent trend holds, Eastern Kingbird in Wisconsin is projected to fall about 21% by 2030 — from 3.0 in 2025 to a central estimate of 2.4 (95% range 0.74–4.0). A 5-year backtest shows a typical error of ±8.5%, with 100% of held-out values landing inside the 95% band.

-21%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 →
2.4Projected 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 →
0.74–4.095% 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 →
±8.5%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 Wisconsin is projected to fall about 21% by 2030 — from 3.0 in 2025 to a central estimate of 2.4 (95% range 0.74–4.0). A 5-year backtest shows a typical error of ±8.5%, with 100% of held-out values landing inside the 95% band.19662030
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 →
20262.50.894.1
20272.50.854.1
20282.40.814.1
20292.40.784.0
20302.40.744.0

Eastern Kingbird Survey Routes in Wisconsin

Routes recording Eastern Kingbird in Wisconsin.
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 →
Omro2220011966
River Falls1320251998
Hazel Green1220251967
Kiel1220221998
Saxeville1120241966
N Freedom1120251966
Kendall1020251967
Fall River1020251966
Wiota920251967
Annaton920251998
Rib Lake820251966
Buena Vista720251998
Weyerhauser620251966
New Lisbon620241967
Bashaw620251998
Gresham620251998
Briggsville620251999
Iron River520251967
Grand View520251966
Gilman520251966
Stevens Pt520221966
Rolling Grnd520251966
Stetsonville520251990
Loraine420251966
Merrill420251966

Eastern Kingbird Population Trend in Other States

alabamaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawyoming

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