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

Bald Eagle Population Trend in Pennsylvania

All statesGeneralists

Bald Eagle in Pennsylvania has surged: up 618% on the route-weighted index since 1983.

+618%Since 1983
61Routes In State
34Years

Notable Bald Eagle Trends in Pennsylvania

long arc increasecomputed index

Bald Eagle has surged in Pennsylvania: up 618% on the route-weighted index since 1983.

Bald Eagle Population Forecast in Pennsylvania

If the recent trend holds, Bald Eagle in Pennsylvania is projected to fall about 52% by 2029 — from 0.32 in 2024 to a central estimate of 0.15 (95% range 0.05–0.25). A 5-year backtest shows a typical error of ±54%, with 20% of held-out values landing inside the 95% band.

-52%Change by 2029
0.15Projected 2029 index
0.05–0.2595% range
±54%Backtest error
19772029
Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.
YearProjected index95% low95% high
20250.140.040.24
20260.140.040.24
20270.140.050.24
20280.150.050.25
20290.150.050.25

Bald Eagle Survey Routes in Pennsylvania

Routes recording Bald Eagle in Pennsylvania.
Arnot420242018
Waterstreet420242013
Brunnerville 2320242024
Jacobus320242024
Harmonsburg220222010
Wyalusing220231998
Pottersdale220232023
Rasselas220072007
Little Marsh220152015
Pocono Summit220232011
Elizabethvil220212001
Margaret220242024
Espyville120241994
Clover120232000
Ferris Crnrs120232006
Whig Hill120212010
Ellenton120192019
Teepleville120222017
Lynch120172014
Berwick120232023
Wild Creek120212021
Odin120242024
Lovelton120232021
Ansonia120132006
Mars120242010

Bald Eagle Population Trend in Other States

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

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