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

Cooper's Hawk Population Trend in Indiana

All statesGeneralists

Cooper's Hawk in Indiana has surged: up 110% on the route-weighted index since 1975.

+110%Since 1975TrendPercent 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 →
63Routes 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 →
49YearsYears 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 IndianaNotable 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 surged in Indiana: up 110% on the route-weighted index since 1975.

Cooper's Hawk Population Forecast in Indiana

If the recent trend holds, Cooper's Hawk in Indiana is projected to stay roughly flat through 2029, near 0.27 (95% range 0.14–0.41). A 5-year backtest shows a typical error of ±44.6%, with 80% of held-out values landing inside the 95% band.

+7%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 →
0.27Projected 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 →
0.14–0.4195% 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 →
±44.6%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 Indiana is projected to stay roughly flat through 2029, near 0.27 (95% range 0.14–0.41). A 5-year backtest shows a typical error of ±44.6%, with 80% 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 →
20250.260.120.39
20260.260.130.40
20270.270.130.40
20280.270.130.41
20290.270.140.41

Cooper's Hawk Survey Routes in Indiana

Routes recording Cooper's Hawk in Indiana.
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 →
Kokomo420212002
Spencer320181994
Clear Spring320141986
Vevay320011983
Witts Station320242019
Middlebury220242003
Maplewood220192017
Friendswood220112011
Washington220152012
Crown Point220111999
Decatur220182001
Portage 2220232007
Hebron120161977
South Bend119911974
Knox120221991
Kewanna119991988
Columbia Cty120041994
Packertown119901975
Ellis120241966
Fowler120042004
W Lafayette120212021
Monticello120122000
Galveston120141984
Thorntown120191997
Middletown120242008

Cooper's Hawk Population Trend in Other States

alabamaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.