BirdAnalyst
Species · BCR 10 · BBS 2025 Release · 1966–2024

Cooper's Hawk In Northern Rockies

All regionsNorthern RockiesGeneralists

Cooper's Hawk in Northern Rockies has edged down: down 13% on the route-weighted index since 1974.

-13%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 →
95Routes 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 →
46YearsYears 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 Northern Rockies. See the full index history below.

Cooper's Hawk In Northern Rockies Population Forecast

If the recent trend holds, Cooper's Hawk in Northern Rockies is projected to fall about 24% by 2029 — from 0.07 in 2024 to a central estimate of 0.05 (95% range 0.01–0.10). A 5-year backtest shows a typical error of ±37.7%, with 80% of held-out values landing inside the 95% band.

-24%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 →
0.05Projected 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 →
0.01–0.1095% 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 →
±37.7%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 Northern Rockies is projected to fall about 24% by 2029 — from 0.07 in 2024 to a central estimate of 0.05 (95% range 0.01–0.10). A 5-year backtest shows a typical error of ±37.7%, with 80% 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 →
20250.050.000.10
20260.050.000.10
20270.050.000.10
20280.050.000.10
20290.050.010.10

Routes In Northern Rockies

Routes recording Cooper's Hawk in Northern Rockies.
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 →
BarnhouseOREGON32021
ChallisIDAHO22019
Rochat DivdeIDAHO22014
ChestnutMONTANA22024
Red RockMONTANA21992
NinemileMONTANA22018
Fish CreekMONTANA22023
UnityOREGON21998
CusickWASHINGTON22017
BasinWYOMING22017
WalcottWYOMING21999
Browns ParkCOLORADO12015
LayCOLORADO12002
NaplesIDAHO12008
MivodenIDAHO12017
AveryIDAHO12022
Lolo PassIDAHO12005
CascadeIDAHO11970
CentervilleIDAHO12008
CoolinIDAHO12023
CabartonIDAHO12003
Salmon RiverIDAHO11991
FeathervilleIDAHO12016
N Fork Cda RIDAHO12007
Libby DamMONTANA11984

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