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

Killdeer Population Trend in Wisconsin

All statesShorebirds

Killdeer in Wisconsin has edged up: up 13% on the route-weighted index since 1968.

+13%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 →
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 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 2029, near 7.2 (95% range 3.8–11). A 5-year backtest shows a typical error of ±10.1%, with 100% of held-out values landing inside the 95% band.

-3%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 →
7.2Projected 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 →
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 →
±10.1%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, Killdeer in Wisconsin is projected to stay roughly flat through 2029, near 7.2 (95% range 3.8–11). A 5-year backtest shows a typical error of ±10.1%, 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 →
20257.43.911
20267.33.911
20277.33.911
20287.33.811
20297.23.811

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 →
Raymond3920241966
Stratford2920241966
Beloit2820241998
Holland2820241998
Pt Washingtn2620241966
Wiota2620241966
Kiel2520221998
Hazel Green2320241967
Annaton2320241998
Rolling Pr2020241966
Mukwonago 22020242005
N Andover1920241967
Grimms1820211998
Casco1720241966
Cumberland1620241966
Holway1619891967
Colby1520241998
River Falls1420241998
Gresham1420241998
Kendall1220231967
Fall River1220241966
Eden1220241966
Gilman1120241966
Gilmanton1120241966
Manitowoc1120241966

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 2026-05-22.