BirdAnalyst
Species · BCR 29 · BBS 2026 Release · 1966–2025

Bald Eagle In Piedmont

All regionsPiedmontBirds of prey

Bald Eagle in Piedmont has surged: up 268% on the route-weighted index since 1990.

+268%Since 1990TrendPercent 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 →
45Routes 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 →
30YearsYears 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 Piedmont. See the full index history below.

Bald Eagle In Piedmont Population Forecast

If the recent trend holds, Bald Eagle in Piedmont is projected to rise about 69% by 2030 — from 0.06 in 2025 to a central estimate of 0.10 (95% range 0.00–0.20). A 5-year backtest shows a typical error of ±51%, with 100% of held-out values landing inside the 95% band.

+69%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 →
0.10Projected 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 →
0.00–0.2095% 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 →
±51%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 Piedmont is projected to rise about 69% by 2030 — from 0.06 in 2025 to a central estimate of 0.10 (95% range 0.00–0.20). A 5-year backtest shows a typical error of ±51%, with 100% of held-out values landing inside the 95% band.19702030
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 →
20260.090.000.19
20270.090.000.20
20280.090.000.20
20290.100.000.20
20300.100.000.20

Routes In Piedmont

Routes recording Bald Eagle in Piedmont.
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 →
EmmitsburgMARYLAND42024
JacobusPENNSYLVANIA32024
IjamsvilleMARYLAND22023
LeolaPENNSYLVANIA22025
Big IslandVIRGINIA22024
LanettALABAMA12021
ForsythGEORGIA12012
BaldwinGEORGIA12011
SiloamGEORGIA11993
Curry HillGEORGIA12019
OlneyMARYLAND12022
WarfieldsbrgMARYLAND12018
Bachman MillMARYLAND12024
FowblesburgMARYLAND11984
EkloMARYLAND12017
Upper XrdsMARYLAND11993
Van BibberMARYLAND12010
TheodoreMARYLAND12016
MadonnaMARYLAND12019
EarltonMARYLAND12022
SandbrookNEW-JERSEY12023
CrotonNEW-JERSEY11970
PottersvilleNEW-JERSEY12013
ClimaxNORTH-CAROLINA12022
ArcolaNORTH-CAROLINA12025

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