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

Bald Eagle Population Trend in Minnesota

All statesBirds of prey

Bald Eagle in Minnesota has surged: up 15× on the route-weighted index since 1982.

15×Since 1982TrendPercent 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 →
70Routes 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 →
44YearsYears 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 MinnesotaNotable 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 Minnesota. See the full index history below.

Bald Eagle Population Forecast in Minnesota

If the recent trend holds, Bald Eagle in Minnesota is projected to rise about 48% by 2030 — from 0.34 in 2025 to a central estimate of 0.51 (95% range 0.40–0.62). A 5-year backtest shows a typical error of ±12.1%, with 80% of held-out values landing inside the 95% band.

+48%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 →
0.51Projected 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 →
0.40–0.6295% 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 →
±12.1%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 Minnesota is projected to rise about 48% by 2030 — from 0.34 in 2025 to a central estimate of 0.51 (95% range 0.40–0.62). A 5-year backtest shows a typical error of ±12.1%, with 80% of held-out values landing inside the 95% band.19772030
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 →
20260.470.360.58
20270.480.370.59
20280.490.380.60
20290.500.390.61
20300.510.400.62

Bald Eagle Survey Routes in Minnesota

Routes recording Bald Eagle in Minnesota.
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 →
Sherburne Nr320251991
Knapp320252003
Wigwam Bay320231977
Tamarac Nwr320231992
Babbitt320162009
Huntley220252015
Ash Creek220242024
Millville220182011
Princeton220242008
St Stephen220061992
Cromwell220241998
Pine River220242001
Edwards220232004
Lude220222007
Nett Lake220212021
Worthington220222016
Frontenac220232006
Brainerd220241995
Ashby220142008
Blackduck220222004
Glendale220221993
Warroad220242010
Greenbush220212021
Chatfield 2220252009
Money Creek120222004

Bald Eagle Population Trend in Other States

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

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