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

Bald Eagle Population Trend in Colorado

All statesGeneralists

Bald Eagle in Colorado has increased: up 40% on the route-weighted index since 1984.

+40%Since 1984
36Routes In State
27Years

Notable Bald Eagle Trends in Colorado

No notable trend signals for Bald Eagle in Colorado. See the full index history below.

Bald Eagle Population Forecast in Colorado

If the recent trend holds, Bald Eagle in Colorado is projected to fall about 22% by 2029 — from 0.10 in 2024 to a central estimate of 0.08 (95% range 0.00–0.16). A 5-year backtest shows a typical error of ±57.8%, with 80% of held-out values landing inside the 95% band.

-22%Change by 2029
0.08Projected 2029 index
0.00–0.1695% range
±57.8%Backtest error
19702029
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
20250.080.000.15
20260.080.000.16
20270.080.000.16
20280.080.000.16
20290.080.000.16

Bald Eagle Survey Routes in Colorado

Routes recording Bald Eagle in Colorado.
Buford320242003
Arsenal 2320242016
Wildhorse L320192019
Maybell220121970
Dolores219841983
Walden220192015
Neegrande220182017
Yampa120212017
Harmony120242019
Arsenal120152001
Last Chance120132013
Falfa120232023
Rio Grnds Rs120192016
Wray Gulch120231995
Hudson120222016
Cortez 2120162010
Animas 2120162015
Tarryall120222022
Castleton120232023
Doyleville120162009
Guffey120242006
Lay120212016
Nunn120192017
Fort Morgan120212002
Julesburg120192016

Bald Eagle Population Trend in Other States

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

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