BirdAnalyst
Species · BCR 17 · BBS 2025 Release · 1966–2024

Cooper's Hawk In Badlands and Prairies

All regionsBadlands and PrairiesGeneralists

Cooper's Hawk in Badlands and Prairies has collapsed: down 75% on the route-weighted index since 1983.

-75%Since 1983TrendPercent 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 →
28Routes 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 →
34YearsYears 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 →

long arc declinecomputed 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 collapsed in Badlands and Prairies: down 75% on the route-weighted index since 1983.

Cooper's Hawk In Badlands and Prairies Population Forecast

If the recent trend holds, Cooper's Hawk in Badlands and Prairies is projected to stay roughly flat through 2029, near 0.01 (95% range 0.00–0.07). A 5-year backtest shows a typical error of ±65.5%, 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 →
0.01Projected 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 →
0.00–0.0795% 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 →
±65.5%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 Badlands and Prairies is projected to stay roughly flat through 2029, near 0.01 (95% range 0.00–0.07). A 5-year backtest shows a typical error of ±65.5%, with 100% of held-out values landing inside the 95% band.19692029
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 →
20250.010.000.08
20260.010.000.08
20270.010.000.08
20280.010.000.07
20290.010.000.07

Routes In Badlands and Prairies

Routes recording Cooper's Hawk in Badlands and Prairies.
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 →
BillWYOMING21999
HighwoodMONTANA12016
BrusettMONTANA12012
LocateMONTANA11995
Reed PointMONTANA12009
Bull Mtn.MONTANA11995
TobaccoNORTH-DAKOTA12005
ZapNORTH-DAKOTA12024
Roosevelt PkNORTH-DAKOTA12006
Glen UllinNORTH-DAKOTA11998
CarsonNORTH-DAKOTA11998
WinnerSOUTH-DAKOTA12023
CusterSOUTH-DAKOTA12024
RevaSOUTH-DAKOTA11995
EnglewoodSOUTH-DAKOTA12018
Long DrawSOUTH-DAKOTA12016
Silver CitySOUTH-DAKOTA12001
HazelrodtSOUTH-DAKOTA12022
Lightning CrSOUTH-DAKOTA12012
Wind Cave NpSOUTH-DAKOTA12004
WyarnoWYOMING12002
SundanceWYOMING11995
DaytonWYOMING12013
SeelyWYOMING11999
MoskeeWYOMING12001

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