BirdAnalyst
Species · West Virginia · BBS 2025 Release · 1966–2024

Cooper's Hawk Population Trend in West Virginia

All statesGeneralists

Cooper's Hawk in West Virginia has fallen sharply: down 66% on the route-weighted index since 1970.

-66%Since 1970TrendPercent 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 →
46Routes 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 →
44YearsYears 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 West VirginiaNotable 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 fallen sharply in West Virginia: down 66% on the route-weighted index since 1970.

Cooper's Hawk Population Forecast in West Virginia

If the recent trend holds, Cooper's Hawk in West Virginia is projected to stay roughly flat through 2028, near 0.04 (95% range 0.00–0.13). A 5-year backtest shows a typical error of ±21.2%, with 100% of held-out values landing inside the 95% band.

n/aChange by 2028TrendPercent 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 2028 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.00–0.1395% 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 →
±21.2%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 West Virginia is projected to stay roughly flat through 2028, near 0.04 (95% range 0.00–0.13). A 5-year backtest shows a typical error of ±21.2%, with 100% of held-out values landing inside the 95% band.19662028
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 →
20240.050.000.14
20250.050.000.14
20260.040.000.13
20270.040.000.13
20280.040.000.13

Cooper's Hawk Survey Routes in West Virginia

Routes recording Cooper's Hawk in West Virginia.
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 →
Bramwell220142006
Strange Crk220082006
Henderson220072007
Hix120061994
Smoot120031995
Pedro120162016
Stollings120031994
Ghent120042004
Hanover120162015
Clear Creek119951995
Glade Run120022002
Breeden119971997
Pt Pleasant120232023
Meadland120222002
Hubbardstown120031976
Spencer120231999
Clendenin120061996
Nicut120121988
Paradise119951995
Yawkey119781973
Olcott119761966
Canaan120032003
Valley Head120012001
Three Forks120072005
Sutton120161976

Cooper's Hawk Population Trend in Other States

alabamaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwisconsinwyoming

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