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

Bald Eagle Population Trend in Ohio

All statesGeneralists

Bald Eagle in Ohio has surged: up 734% on the route-weighted index since 1996.

+734%Since 1996TrendPercent 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 →
29Routes 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 →
27YearsYears 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 OhioNotable 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 Ohio: up 734% on the route-weighted index since 1996.

Bald Eagle Population Forecast in Ohio

If the recent trend holds, Bald Eagle in Ohio is projected to fall about 41% by 2029 — from 0.32 in 2024 to a central estimate of 0.19 (95% range 0.07–0.30). A 5-year backtest shows a typical error of ±52.3%, with 20% of held-out values landing inside the 95% band.

-41%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 →
0.19Projected 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 →
0.07–0.3095% 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 →
±52.3%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, Bald Eagle in Ohio is projected to fall about 41% by 2029 — from 0.32 in 2024 to a central estimate of 0.19 (95% range 0.07–0.30). A 5-year backtest shows a typical error of ±52.3%, with 20% of held-out values landing inside the 95% band.19712029
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 →
20250.170.060.28
20260.170.060.29
20270.180.070.29
20280.180.070.30
20290.190.070.30

Bald Eagle Survey Routes in Ohio

Routes recording Bald Eagle in Ohio.
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 →
Bloomville220241996
Kingsway220221971
Pittsfield220242024
Stonecreek220232017
Botkins220182018
Kalida220092004
No Kenton220242024
Lockport120222022
Kunkle120232023
Bismark119901990
Middlefield120062006
Lenox120242016
Herner Crns120242019
Birmingham120232022
Kenton120102001
Marion120212021
New Dover120172017
Fulton120242014
Dresden120222022
Smithfield120242024
Darrtown120212021
Omega120232012
Dell120142014
Rome120102010
Limestone120221990

Bald Eagle Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaoklahomaoregonpennsylvaniasouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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