BirdAnalyst
Species · BCR 14 · BBS 2025 Release · 1966–2024

Cooper's Hawk In Atlantic Northern Forest

All regionsAtlantic Northern ForestGeneralists

Cooper's Hawk in Atlantic Northern Forest has surged: up 101% on the route-weighted index since 1971.

+101%Since 1971TrendPercent 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 →
64Routes 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 →
42YearsYears 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 Atlantic Northern Forest. See the full index history below.

Cooper's Hawk In Atlantic Northern Forest Population Forecast

If the recent trend holds, Cooper's Hawk in Atlantic Northern Forest is projected to stay roughly flat through 2029, near 0.04 (95% range 0.01–0.07). A 5-year backtest shows a typical error of ±87.6%, with 100% of held-out values landing inside the 95% band.

n/aChange 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 →
0.04Projected 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 →
0.01–0.0795% 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 →
±87.6%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 Atlantic Northern Forest is projected to stay roughly flat through 2029, near 0.04 (95% range 0.01–0.07). A 5-year backtest shows a typical error of ±87.6%, with 100% of held-out values landing inside the 95% band.19672029
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 →
20250.040.010.07
20260.040.010.07
20270.040.010.07
20280.040.010.07
20290.040.010.07

Routes In Atlantic Northern Forest

Routes recording Cooper's Hawk in Atlantic Northern Forest.
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 →
GreenwoodMAINE21973
Brownfield 2MAINE22011
ConcordNEW-HAMPSHIRE22016
PetersburgNEW-YORK22006
S WallingfrdVERMONT21999
New HartfordCONNECTICUT12017
WestbrookMAINE12014
NewcastleMAINE11997
ReedsMAINE12010
South ArmMAINE12009
East TroyMAINE12019
HarmonyMAINE12022
HermonMAINE12016
AuroraMAINE12016
Moose RiverMAINE12005
Carrying PlMAINE12014
WytopitlockMAINE11997
MedwayMAINE12008
HudsonMAINE11993
Forest StaMAINE11972
Horse MtnMAINE12009
Heron LakeMAINE11983
CornvilleMAINE12022
N OrangeMASSACHUSETTS11999
CummingtonMASSACHUSETTS12008

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