BirdAnalyst
Species · North Dakota · BBS 2025 Release · 1966–2024

Cooper's Hawk Population Trend in North Dakota

All statesGeneralists

Cooper's Hawk in North Dakota has edged up: up 11% on the route-weighted index since 1979.

+11%Since 1979TrendPercent 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 →
31Routes 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 →
38YearsYears 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 North DakotaNotable 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 Cooper's Hawk in North Dakota. See the full index history below.

Cooper's Hawk Population Forecast in North Dakota

If the recent trend holds, Cooper's Hawk in North Dakota is projected to stay roughly flat through 2029, near 0.08 (95% range 0.00–0.15). A 5-year backtest shows a typical error of ±33.7%, 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 →
0.08Projected 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 →
0.00–0.1595% 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 →
±33.7%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 North Dakota is projected to stay roughly flat through 2029, near 0.08 (95% range 0.00–0.15). A 5-year backtest shows a typical error of ±33.7%, with 100% of held-out values landing inside the 95% band.19702029
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 →
20250.070.000.15
20260.070.000.15
20270.070.000.15
20280.080.000.15
20290.080.000.15

Cooper's Hawk Survey Routes in North Dakota

Routes recording Cooper's Hawk in North Dakota.
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 →
Wild Rose220051999
Douglas Crk220191996
Forman120172017
Carson119981998
Edgeley120222021
Kempton120161995
Emerado120171978
Horsehead Lk120212021
Buchanan120242024
Bowesmont119901990
Nash120162016
Rolla120162008
Niles119951993
Regan120192012
Carpio120111979
Loraine119911989
Tobacco120051994
Stanley120211970
Abercrombie120052005
Denbigh120111999
Zap120242017
Roosevelt Pk120061986
Glen Ullin119981998
Powers Lake120142002
Parshall119951993

Cooper's Hawk Population Trend in Other States

alabamaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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