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

Eastern Kingbird Population Trend in Wisconsin

All statesAerial insectivores

Eastern Kingbird in Wisconsin has declined: down 33% on the route-weighted index since 1968.

-33%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 →
58YearsYears 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 15% by 2029 — from 2.8 in 2024 to a central estimate of 2.4 (95% range 0.74–4.0). A 5-year backtest shows a typical error of ±13.1%, with 100% of held-out values landing inside the 95% band.

-15%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 →
2.4Projected 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 →
0.74–4.095% 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 →
±13.1%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 15% by 2029 — from 2.8 in 2024 to a central estimate of 2.4 (95% range 0.74–4.0). A 5-year backtest shows a typical error of ±13.1%, with 100% of held-out values landing inside the 95% band.19662029
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 →
20252.50.884.2
20262.50.854.1
20272.40.814.1
20282.40.774.0
20292.40.744.0

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
Pardeeville1220241967
Kiel1220221998
Saxeville1120241966
Hazel Green1120241967
River Falls920241998
Iron River820241967
N Freedom820241966
Wiota820241967
Hebron820241967
Stetsonville820241990
Gresham820241998
Annaton820241998
Eden720231966
New Lisbon620241967
Stratford520241968
Stevens Pt520221966
Casco520241966
Beloit520241998
Mukwonago 2520242006
Dresser420241966
Union Twp420241966
Merrill420241966
Crandon420241967
Trempealeau420241966

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 2026-05-22.