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Species · Oklahoma · BBS 2026 Release · 1966–2025

Killdeer Population Trend in Oklahoma

All statesShorebirds

Killdeer in Oklahoma has held roughly steady: down 1% on the route-weighted index since 1969.

-1%Since 1969TrendPercent 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 →
68Routes 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 OklahomaNotable 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 Oklahoma. See the full index history below.

Killdeer Population Forecast in Oklahoma

If the recent trend holds, Killdeer in Oklahoma is projected to stay roughly flat through 2030, near 5.2 (95% range 2.4–8.0). A 5-year backtest shows a typical error of ±26%, with 100% of held-out values landing inside the 95% band.

-2%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 →
5.2Projected 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 →
2.4–8.095% 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 →
±26%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 Oklahoma is projected to stay roughly flat through 2030, near 5.2 (95% range 2.4–8.0). A 5-year backtest shows a typical error of ±26%, with 100% of held-out values landing inside the 95% band.19672030
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 →
20265.42.68.1
20275.32.68.1
20285.32.58.0
20295.22.58.0
20305.22.48.0

Killdeer Survey Routes in Oklahoma

Routes recording Killdeer in Oklahoma.
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 →
Welch2820251967
Ft Sill East2019941994
Beaver1920181979
Colony1819951995
Hooker1820251992
Wakita1520161967
Wainwright1520131992
Cashion1220241992
Hunter1220241992
Matoy1120251992
Randlett1020251967
Hardesty1020241970
Cooperton1020251992
Sickles1020211992
Canadian920171967
Douglas920221967
Rosston920181967
Clear Lake920251992
Mcalester819911967
Cookietown820061968
Bartlesville820251967
Loco719851967
Elgin720161994
Erick620241969
Peoria620231967

Killdeer Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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