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

Cooper's Hawk Population Trend in Michigan

All statesGeneralists

Cooper's Hawk in Michigan has surged: up 82% on the route-weighted index since 1969.

+82%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 →
65Routes 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 →
54YearsYears 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 MichiganNotable 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 Michigan: up 82% on the route-weighted index since 1969.

Cooper's Hawk Population Forecast in Michigan

If the recent trend holds, Cooper's Hawk in Michigan is projected to rise about 38% by 2029 — from 0.09 in 2024 to a central estimate of 0.12 (95% range 0.04–0.19). A 5-year backtest shows a typical error of ±15.2%, with 100% of held-out values landing inside the 95% band.

+38%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 →
0.12Projected 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 →
0.04–0.1995% 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 →
±15.2%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 Michigan is projected to rise about 38% by 2029 — from 0.09 in 2024 to a central estimate of 0.12 (95% range 0.04–0.19). A 5-year backtest shows a typical error of ±15.2%, with 100% 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 →
20250.110.040.19
20260.110.040.19
20270.120.040.19
20280.120.040.19
20290.120.040.19

Cooper's Hawk Survey Routes in Michigan

Routes recording Cooper's Hawk in Michigan.
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 →
Cohoctah320232023
New Troy220141987
Barry S.G.A. 2220152015
Richmond220172001
St Charles220101991
Homer220061986
Deckerville220161983
Harrietta120242013
Ontonagon120142014
Marenisco120192019
Hungerford120152015
Chippewa Lk.120131995
Herman120152015
Belding 2120162011
Imp Lake119941994
New Buffalo120011992
Ishpeming119841984
Hamburg 2120222019
Allegan Wma120032003
Cunard120191975
Shingleton119951990
Almena120151993
Barry S.G.A.120101995
Bear Lake120142014
Scottville119821982

Cooper's Hawk Population Trend in Other States

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

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