BirdAnalyst
Species · Wyoming · BBS 2026 Release · 1966–2025

Bald Eagle Population Trend in Wyoming

All statesBirds of prey

Bald Eagle in Wyoming has surged: up 622% on the route-weighted index since 1987.

+622%Since 1987TrendPercent 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 →
52Routes 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 →
37YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Bald 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 →

No notable trend signals for Bald Eagle in Wyoming. See the full index history below.

Bald Eagle Population Forecast in Wyoming

If the recent trend holds, Bald Eagle in Wyoming is projected to stay roughly flat through 2030, near 0.33 (95% range 0.18–0.48). A 5-year backtest shows a typical error of ±41%, with 40% of held-out values landing inside the 95% band.

+9%Change by 2030TrendPercent 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 →
0.33Projected 2030 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.18–0.4895% 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 →
±41%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, Bald Eagle in Wyoming is projected to stay roughly flat through 2030, near 0.33 (95% range 0.18–0.48). A 5-year backtest shows a typical error of ±41%, with 40% of held-out values landing inside the 95% band.19832030
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 →
20260.290.140.45
20270.300.150.45
20280.310.160.46
20290.320.170.47
20300.330.180.48

Bald Eagle Survey Routes in Wyoming

Routes recording Bald 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 →
Harmony820252015
Fontenelle520252009
Warbonnet520242010
Yellowstone220251987
Elk Horn220152015
Brookhurst220112011
Riverside220252006
Mammoth220092002
Dayton220232010
Seedskadee 2220242024
Daniel219881988
Boulder220171999
Rawlins 2220172017
Kaycee220252022
Walcott220251989
Ryan Park220252025
Flamin Gorge220222022
Ne Entrance120191997
Wyarno120231983
Prior Flats120212021
Colter Bay119961996
Dubois120232019
Rozet120232023
Dwyer120192006
Seely 2120252001

Bald Eagle Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniasouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsin

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14.