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Species · Oklahoma · BBS 2026 Release · 1966–2025

Common Nighthawk Population Trend in Oklahoma

All statesAerial insectivores

Common Nighthawk in Oklahoma has surged: up 132% on the route-weighted index since 1969.

+132%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 →
67Routes 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 Common Nighthawk 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 →

long arc increasecomputed indexTrend sourceWhether the figure is our own computed route-weighted index or an official USGS modeled estimate. The current build labels every trend as computed.Full methodology →

Common Nighthawk has surged in Oklahoma: up 132% on the route-weighted index since 1969.

Common Nighthawk Population Forecast in Oklahoma

If the recent trend holds, Common Nighthawk in Oklahoma is projected to stay roughly flat through 2030, near 5.6 (95% range 2.8–8.4). A 5-year backtest shows a typical error of ±21.9%, with 100% of held-out values landing inside the 95% band.

-4%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 →
5.6Projected 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 →
2.8–8.495% 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 →
±21.9%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, Common Nighthawk in Oklahoma is projected to stay roughly flat through 2030, near 5.6 (95% range 2.8–8.4). A 5-year backtest shows a typical error of ±21.9%, 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 →
20265.52.78.3
20275.52.78.3
20285.62.88.4
20295.62.88.4
20305.62.88.4

Common Nighthawk Survey Routes in Oklahoma

Routes recording Common Nighthawk 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 →
Cooperton3820251992
Beaver3520181979
Hardesty2120241970
Clear Lake2020251992
Hunter1920241992
Randlett1620251967
Jet1420241992
Lookout1320251968
Rosston1320181969
Douglas1220221967
Foraker1120251992
Duncan1120251986
Hollis1020251993
Cashion920241992
Woodward920251992
Ft Sill East919941994
Grimes820251967
Wakita820161967
Arapaho820141992
Hooker820251993
Keyes820241992
Ft Sill West819941994
Wichita Mtns819941994
Felt720241968
Loco619851967

Common Nighthawk 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.