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

Golden Eagle In Great Basin

All regionsGreat BasinGeneralists

Golden Eagle in Great Basin has edged down: down 14% on the route-weighted index since 1971.

-14%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 →
171Routes 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 →
55YearsYears 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 Golden Eagle in Great Basin. See the full index history below.

Golden Eagle In Great Basin Population Forecast

If the recent trend holds, Golden Eagle in Great Basin is projected to rise about 27% by 2029 — from 0.24 in 2024 to a central estimate of 0.31 (95% range 0.16–0.46). A 5-year backtest shows a typical error of ±30%, with 80% of held-out values landing inside the 95% band.

+27%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 →
0.31Projected 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 →
0.16–0.4695% 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 →
±30%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, Golden Eagle in Great Basin is projected to rise about 27% by 2029 — from 0.24 in 2024 to a central estimate of 0.31 (95% range 0.16–0.46). A 5-year backtest shows a typical error of ±30%, with 80% 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 →
20250.310.160.45
20260.310.160.45
20270.310.160.46
20280.310.160.46
20290.310.160.46

Routes In Great Basin

Routes recording Golden Eagle 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 →
KeltonUTAH61995
ImnahaOREGON52023
Fall River MillsCALIFORNIA42010
Sand PassNEVADA42021
Humboldt NfNEVADA42018
Malheur NwrOREGON41995
Iron GateCALIFORNIA32018
LeadoreIDAHO32024
DuboisIDAHO32024
VyaNEVADA31973
Calico SprNEVADA31974
GardnervilleNEVADA32011
JarbidgeNEVADA32006
Charleston ReservoirNEVADA32024
Darroughs Hot SpgsNEVADA32018
AustinNEVADA32018
BlitzenOREGON31993
Notch PeakUTAH32018
FairfieldUTAH32024
CliveUTAH32021
RavendaleCALIFORNIA22008
BodieCALIFORNIA22022
MacdoelCALIFORNIA22019
Clear Lk ResCALIFORNIA22013
SquirrelIDAHO21994

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