BirdAnalyst
Species · Wyoming · BBS 2025 Release · 1966–2024

Golden Eagle Population Trend in Wyoming

All statesGeneralists

Golden Eagle in Wyoming has surged: up 179% on the route-weighted index since 1971.

+179%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 →
122Routes 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 →
54YearsYears 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 WyomingNotable 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 increasecomputed 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 surged in Wyoming: up 179% on the route-weighted index since 1971.

Golden Eagle Population Forecast in Wyoming

If the recent trend holds, Golden Eagle in Wyoming is projected to rise about 70% by 2029 — from 0.38 in 2024 to a central estimate of 0.65 (95% range 0.35–0.95). A 5-year backtest shows a typical error of ±29.6%, with 100% of held-out values landing inside the 95% band.

+70%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 →
0.65Projected 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 →
0.35–0.9595% 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 →
±29.6%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 Wyoming is projected to rise about 70% by 2029 — from 0.38 in 2024 to a central estimate of 0.65 (95% range 0.35–0.95). A 5-year backtest shows a typical error of ±29.6%, with 100% of held-out values landing inside the 95% band.19682029
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 →
20250.630.330.93
20260.630.330.94
20270.640.340.94
20280.640.340.94
20290.650.350.95

Golden Eagle Survey Routes in Wyoming

Routes recording Golden Eagle in Wyoming.
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 →
Reliance920181978
Natrona619921968
Nowood520171988
Soda Well520231979
Harmony520221980
Glenrock419761976
Meeteetse420241993
Carter420162016
Cumberland320231977
Arminto320241983
Highlight320071982
Wamsutter320241990
Walcott320241985
Bucknum320181994
Hampshire320222014
Wyarno220191980
Dubois220221991
Midvale220221993
Elk Horn220021988
Bear Creek220221973
Ervay220241977
Mckinnon219861973
Riverside220231990
Hunter Peak220061996
Frannie220231999

Golden Eagle Population Trend in Other States

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