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

Killdeer Population Trend in Wisconsin

All statesShorebirds

Killdeer in Wisconsin has edged up: up 11% on the route-weighted index since 1968.

+11%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 →
96Routes 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 Killdeer 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 Killdeer in Wisconsin. See the full index history below.

Killdeer Population Forecast in Wisconsin

If the recent trend holds, Killdeer in Wisconsin is projected to stay roughly flat through 2030, near 7.2 (95% range 3.8–11). A 5-year backtest shows a typical error of ±6.5%, with 100% of held-out values landing inside the 95% band.

-5%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 →
7.2Projected 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 →
3.8–1195% 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 →
±6.5%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, Killdeer in Wisconsin is projected to stay roughly flat through 2030, near 7.2 (95% range 3.8–11). A 5-year backtest shows a typical error of ±6.5%, 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 →
20267.44.011
20277.33.911
20287.33.911
20297.33.811
20307.23.811

Killdeer Survey Routes in Wisconsin

Routes recording Killdeer 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 →
Stratford2820251966
Raymond2820251966
Stetsonville2820251990
Pt Washingtn2620241966
N Andover2620251967
Beloit2420251998
Annaton2120251998
Hazel Green2020251967
Kendall1920251967
N Freedom1920251966
Holland1920251998
Grimms1820211998
Highland1820251998
Paris1720251966
River Falls1720251998
Holway1619891967
Casco1620251966
Kiel1620251998
Brownsville1320251966
Hebron1320251966
Verona1320251991
Hudson1220251966
Gilman1220251966
Meridean1220251998
Trempealeau1120251966

Killdeer Population Trend in Other States

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

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