BirdAnalyst
Species · BCR 24 · BBS 2026 Release · 1966–2025

Bald Eagle In Central Hardwoods

All regionsCentral HardwoodsBirds of prey

Bald Eagle in Central Hardwoods has surged: up 12× on the route-weighted index since 2000.

12×Since 2000TrendPercent 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 →
64Routes In RegionSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
25YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable SignalsNotable 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 Central Hardwoods. See the full index history below.

Bald Eagle In Central Hardwoods Population Forecast

If the recent trend holds, Bald Eagle in Central Hardwoods is projected to fall about 38% by 2030 — from 0.23 in 2025 to a central estimate of 0.15 (95% range 0.06–0.23). A 5-year backtest shows a typical error of ±61.6%, with 0% of held-out values landing inside the 95% band.

-38%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 →
0.15Projected 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 →
0.06–0.2395% 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 →
±61.6%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, Bald Eagle in Central Hardwoods is projected to fall about 38% by 2030 — from 0.23 in 2025 to a central estimate of 0.15 (95% range 0.06–0.23). A 5-year backtest shows a typical error of ±61.6%, with 0% of held-out values landing inside the 95% band.19812030
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 →
20260.130.040.22
20270.130.040.22
20280.140.050.23
20290.140.050.23
20300.150.060.23

Routes In Central Hardwoods

Routes recording Bald Eagle in Central Hardwoods.
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 →
Wheeler DamALABAMA42023
Beaverdam LkILLINOIS32022
KarnakILLINOIS32025
AkersMISSOURI32021
Osage BeachMISSOURI32025
SwaimALABAMA22025
ElkmontALABAMA22021
TrianaALABAMA22012
PulaskiILLINOIS22025
CentertownMISSOURI22025
ZionARKANSAS12021
Brnt PrairieILLINOIS12025
BremenILLINOIS12022
BelknapILLINOIS12025
DelwoodILLINOIS12011
YorkILLINOIS12023
BrownvilleILLINOIS12024
RoyaltonILLINOIS12019
PimentoINDIANA12022
BrazilINDIANA12025
SpencerINDIANA12024
MillersburgINDIANA12019
Indian SpgsINDIANA12021
CelestineINDIANA12024
Clear SpringINDIANA12025

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