BirdAnalyst
Species · New Mexico · BBS 2025 Release · 1966–2024

Golden Eagle Population Trend in New Mexico

All statesGeneralists

Golden Eagle in New Mexico has collapsed: down 84% on the route-weighted index since 1971.

-84%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 →
44Routes 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 →
50YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Golden Eagle Trends in New MexicoNotable 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 →

Golden Eagle has collapsed in New Mexico: down 84% on the route-weighted index since 1971.

Golden Eagle Population Forecast in New Mexico

If the recent trend holds, Golden Eagle in New Mexico is projected to stay roughly flat through 2028, near 0.03 (95% range 0.00–0.16). A 5-year backtest shows a typical error of ±46.3%, with 80% 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 →
0.03Projected 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 →
0.00–0.1695% 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 →
±46.3%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 New Mexico is projected to stay roughly flat through 2028, near 0.03 (95% range 0.00–0.16). A 5-year backtest shows a typical error of ±46.3%, with 80% of held-out values landing inside the 95% band.19682028
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 →
20240.040.000.18
20250.040.000.17
20260.030.000.17
20270.030.000.17
20280.030.000.16

Golden Eagle Survey Routes in New Mexico

Routes recording Golden Eagle in New Mexico.
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 →
Farmington219761976
Nageesi220182018
Farley219991990
La Cienega219681968
Valencia219871969
Horse Mtn219991998
Gage220191969
Deming219741974
Jornada220161998
Vicks Peak220211995
Laborcita220191993
Hatchet Peak220021994
Logan219971997
Grenville120211971
Salt Lake 2120192019
Torreon120011994
Fence Lake120221981
Correo119791979
Claunch119931981
Cooley Lake120162016
Horse Spgs120091993
Roswell119691968
Cloudcroft120121991
Dulce120182011
Angel Fire 2120132013

Golden Eagle Population Trend in Other States

alaskaarizonacaliforniacoloradoidahomontananebraskanevadanew-yorknorth-dakotaoklahomaoregonsouth-dakotatexasutahwashingtonwyoming

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