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

Cooper's Hawk Population Trend in Ohio

All statesBirds of prey

Cooper's Hawk in Ohio has risen sharply: up 73% on the route-weighted index since 1968.

+73%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 →
76Routes 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 →
57YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Cooper's Hawk Trends in OhioNotable 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 →

Cooper's Hawk has risen sharply in Ohio: up 73% on the route-weighted index since 1968.

Cooper's Hawk Population Forecast in Ohio

If the recent trend holds, Cooper's Hawk in Ohio is projected to rise about 127% by 2030 — from 0.12 in 2025 to a central estimate of 0.27 (95% range 0.11–0.42). A 5-year backtest shows a typical error of ±99.2%, with 40% of held-out values landing inside the 95% band.

+127%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 →
0.27Projected 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 →
0.11–0.4295% 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 →
±99.2%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, Cooper's Hawk in Ohio is projected to rise about 127% by 2030 — from 0.12 in 2025 to a central estimate of 0.27 (95% range 0.11–0.42). A 5-year backtest shows a typical error of ±99.2%, with 40% 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 →
20260.260.100.41
20270.260.100.42
20280.260.100.42
20290.270.110.42
20300.270.110.42

Cooper's Hawk Survey Routes in Ohio

Routes recording Cooper's Hawk in Ohio.
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 →
Wayne N.F.319991997
Harveysburg319921969
Ashley220131990
Stonecreek220242009
Botkins220152011
South Olive220082005
Xenia220172004
Dell220142008
Limestone220171991
Lockport120221989
Napoleon120251986
Kunkle120161992
Bloomville120231992
Kingsway120021988
Graytown119751975
N Baltimore120192008
Marion 2120252025
Pittsfield120221998
Tar Hollow120212006
Bismark119951987
Wayland120171993
Garrettsvile119901981
Middlefield119931968
Strongsville119771977
Mohican S.F.120212008

Cooper's Hawk Population Trend in Other States

alabamaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaoklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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