BirdAnalyst
Species · BCR 9 · BBS 2025 Release · 1966–2024

American Goshawk In Great Basin

All regionsGreat BasinGeneralists

American Goshawk in Great Basin has fallen sharply: down 65% on the route-weighted index since 1973.

-65%Since 1973TrendPercent 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 →
34Routes 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 →
33YearsYears 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 American Goshawk in Great Basin. See the full index history below.

American Goshawk In Great Basin Population Forecast

If the recent trend holds, American Goshawk in Great Basin is projected to stay roughly flat through 2029, near 0.01 (95% range 0.00–0.03). A 5-year backtest shows a typical error of ±33%, 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 →
0.00–0.0395% 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 →
±33%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, American Goshawk in Great Basin is projected to stay roughly flat through 2029, near 0.01 (95% range 0.00–0.03). A 5-year backtest shows a typical error of ±33%, 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 →
20250.010.000.03
20260.010.000.03
20270.010.000.03
20280.010.000.03
20290.010.000.03

Routes In Great Basin

Routes recording American Goshawk in Great Basin.
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 →
PauninaOREGON32011
Blacks CreekIDAHO21973
HawthorneNEVADA22001
SistersOREGON22009
RavendaleCALIFORNIA11988
MacdoelCALIFORNIA12017
BartleCALIFORNIA12019
TionestaCALIFORNIA12019
Crowder FlatCALIFORNIA12005
MadelineCALIFORNIA11998
Magic MtnIDAHO12017
JoelIDAHO11989
Silver CityIDAHO12007
Dougal ResIDAHO12003
PrestonIDAHO11989
AustinNEVADA12018
Dell SpringOREGON11981
BuchananOREGON11985
Modoc PointOREGON11969
PaisleyOREGON12021
BlyOREGON12001
Davis LakeOREGON12024
Picture FlatOREGON12023
ChinchaloOREGON12003
Hardware RanchUTAH12015

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