BirdAnalyst
Species · BCR 12 · BBS 2026 Release · 1966–2025

Cooper's Hawk In Boreal Hardwood Transition

All regionsBoreal Hardwood TransitionBirds of prey

Cooper's Hawk in Boreal Hardwood Transition has increased: up 31% on the route-weighted index since 1974.

+31%Since 1974TrendPercent 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 →
57Routes In RegionSurvey 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 SignalsNotable 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 Boreal Hardwood Transition. See the full index history below.

Cooper's Hawk In Boreal Hardwood Transition Population Forecast

If the recent trend holds, Cooper's Hawk in Boreal Hardwood Transition is projected to fall about 47% by 2030 — from 0.07 in 2025 to a central estimate of 0.04 (95% range 0.00–0.08). A 5-year backtest shows a typical error of ±62.2%, with 100% of held-out values landing inside the 95% band.

-47%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 →
0.04Projected 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 →
0.00–0.0895% 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 →
±62.2%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 Boreal Hardwood Transition is projected to fall about 47% by 2030 — from 0.07 in 2025 to a central estimate of 0.04 (95% range 0.00–0.08). A 5-year backtest shows a typical error of ±62.2%, with 100% of held-out values landing inside the 95% band.19692030
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 →
20260.040.000.08
20270.040.000.08
20280.040.000.08
20290.040.000.08
20300.040.000.08

Routes In Boreal Hardwood Transition

Routes recording Cooper's Hawk in Boreal Hardwood Transition.
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 →
Union TwpWISCONSIN22025
OntonagonMICHIGAN12014
MareniscoMICHIGAN12019
HermanMICHIGAN12015
IshpemingMICHIGAN11984
CunardMICHIGAN12019
ShingletonMICHIGAN11995
Bear LakeMICHIGAN12014
Lake CityMICHIGAN11998
Skegemog PtMICHIGAN12011
RiggsvilleMICHIGAN11979
SkeelsMICHIGAN12004
FredericMICHIGAN11991
Red OakMICHIGAN12007
OberlinMICHIGAN11994
CathroMICHIGAN12008
Sand LakeMICHIGAN12022
Isabella 2MICHIGAN12023
Pleasant Valley 2MICHIGAN12010
HarriettaMICHIGAN12024
MayfieldMICHIGAN12025
Imp LakeMICHIGAN11994
Wigwam BayMINNESOTA12013
Mille LacsMINNESOTA12019
BackusMINNESOTA11984

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