BirdAnalyst
Species · BCR 14 · BBS 2026 Release · 1966–2025

Bald Eagle In Atlantic Northern Forest

All regionsAtlantic Northern ForestBirds of prey

Bald Eagle in Atlantic Northern Forest has surged: up 480% on the route-weighted index since 1996.

+480%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 →
38Routes 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 →
29YearsYears 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 Atlantic Northern Forest. See the full index history below.

Bald Eagle In Atlantic Northern Forest Population Forecast

If the recent trend holds, Bald Eagle in Atlantic Northern Forest is projected to fall about 15% by 2030 — from 0.08 in 2025 to a central estimate of 0.07 (95% range 0.03–0.11). A 5-year backtest shows a typical error of ±49.5%, with 20% of held-out values landing inside the 95% band.

-15%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 →
0.07Projected 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 →
0.03–0.1195% 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 →
±49.5%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 Atlantic Northern Forest is projected to fall about 15% by 2030 — from 0.08 in 2025 to a central estimate of 0.07 (95% range 0.03–0.11). A 5-year backtest shows a typical error of ±49.5%, with 20% of held-out values landing inside the 95% band.19802030
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 →
20260.060.030.10
20270.070.030.10
20280.070.030.11
20290.070.030.11
20300.070.030.11

Routes In Atlantic Northern Forest

Routes recording Bald Eagle in Atlantic Northern Forest.
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 →
GreenwoodMAINE22001
Turner 2MAINE22024
Wilson MillsMAINE12023
HartfordMAINE12017
HarmonyMAINE12013
HermonMAINE12005
CooperMAINE12021
Carrying PlMAINE12019
CarrabassettMAINE12025
CharlestonMAINE12007
Seboomook LkMAINE12005
MedwayMAINE12025
Clayton LakeMAINE11999
AshlandMAINE12006
Baker LakeMAINE12000
RomeMAINE12012
JeffersonMAINE11996
Church HillMAINE12014
Lake MoxieMAINE12013
CornvilleMAINE12023
SearsportMAINE12022
Brownfield 2MAINE12023
SheffieldMASSACHUSETTS11981
Cummington 2MASSACHUSETTS12025
ConcordNEW-HAMPSHIRE12018

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