BirdAnalyst
Species · BCR 16 · BBS 2025 Release · 1966–2024

Golden Eagle In Southern Rockies / Colorado Plateau

All regionsSouthern Rockies / Colorado PlateauGeneralists

Golden Eagle in Southern Rockies / Colorado Plateau has risen sharply: up 60% on the route-weighted index since 1970.

+60%Since 1970TrendPercent 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 →
169Routes 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 →
55YearsYears 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 →

long arc increasecomputed indexTrend sourceWhether the figure is our own computed route-weighted index or an official USGS modeled estimate. The current build labels every trend as computed.Full methodology →

Golden Eagle has risen sharply in Southern Rockies / Colorado Plateau: up 60% on the route-weighted index since 1970.

Golden Eagle In Southern Rockies / Colorado Plateau Population Forecast

If the recent trend holds, Golden Eagle in Southern Rockies / Colorado Plateau is projected to rise about 28% by 2029 — from 0.20 in 2024 to a central estimate of 0.26 (95% range 0.10–0.41). A 5-year backtest shows a typical error of ±40.1%, with 100% of held-out values landing inside the 95% band.

+28%Change by 2029TrendPercent 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 →
0.26Projected 2029 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.10–0.4195% 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 →
±40.1%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, Golden Eagle in Southern Rockies / Colorado Plateau is projected to rise about 28% by 2029 — from 0.20 in 2024 to a central estimate of 0.26 (95% range 0.10–0.41). A 5-year backtest shows a typical error of ±40.1%, with 100% of held-out values landing inside the 95% band.19682029
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 →
20250.260.100.41
20260.260.100.41
20270.260.100.41
20280.260.100.41
20290.260.100.41

Routes In Southern Rockies / Colorado Plateau

Routes recording Golden Eagle in Southern Rockies / Colorado Plateau.
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 →
AntonitoCOLORADO51996
GreasewoodARIZONA41996
CortezCOLORADO32008
Rifle FallsCOLORADO32021
Castle ButteARIZONA22006
Navajo TrailARIZONA22018
AspenCOLORADO21998
Cheesman LkCOLORADO22018
BlancaCOLORADO21987
WaldenCOLORADO22024
TarryallCOLORADO22023
De BequeCOLORADO22022
TincupCOLORADO22009
Gribbles PrkCOLORADO22024
Yellowjacket PassCOLORADO22018
Mesaverde NpCOLORADO22024
FarmingtonNEW-MEXICO21976
NageesiNEW-MEXICO22018
La CienegaNEW-MEXICO21968
ValenciaNEW-MEXICO21987
Horse MtnNEW-MEXICO21999
Navajo LakeUTAH21968
JensenUTAH22024
BonanzaUTAH22012
Glen CanyonUTAH22021

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