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

Bald Eagle Population Trend in Missouri

All statesGeneralists

Bald Eagle in Missouri has surged: up 528% on the route-weighted index since 2008.

+528%Since 2008TrendPercent 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 →
43Routes 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 →
18YearsYears 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 MissouriNotable 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 →

Bald Eagle has surged in Missouri: up 528% on the route-weighted index since 2008.

Bald Eagle Population Forecast in Missouri

If the recent trend holds, Bald Eagle in Missouri is projected to rise about 22% by 2029 — from 0.19 in 2024 to a central estimate of 0.24 (95% range 0.17–0.31). A 5-year backtest shows a typical error of ±17.1%, with 100% of held-out values landing inside the 95% band.

+22%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 →
0.24Projected 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 →
0.17–0.3195% 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 →
±17.1%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 Missouri is projected to rise about 22% by 2029 — from 0.19 in 2024 to a central estimate of 0.24 (95% range 0.17–0.31). A 5-year backtest shows a typical error of ±17.1%, with 100% of held-out values landing inside the 95% band.20062029
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 →
20250.200.130.27
20260.210.140.28
20270.220.150.29
20280.230.160.30
20290.240.170.31

Bald Eagle Survey Routes in Missouri

Routes recording Bald Eagle in Missouri.
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 →
Akers320212021
Ohio320182013
Rensselaer220242015
Sticklervill220172017
Deventer120212007
Pulaski120142014
Norborne120222015
Sweden120242024
Kahoka2120172017
Pineville120192017
Cp Girardeau120212008
Cascade120162014
Watson120232023
Rueter 2120232023
Handley120212009
Graydon120242010
Filley120242006
Luray120242015
Woodlandville120222018
Hayden120192017
Danville120232023
Syracuse120232023
Centertown120232023
Eugene120182018
Gerald120192019

Bald Eagle Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniasouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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