BirdAnalyst
Species · BCR 5 · BBS 2025 Release · 1966–2024

Bald Eagle In Northern Pacific Rainforest

All regionsNorthern Pacific RainforestGeneralists

Bald Eagle in Northern Pacific Rainforest has surged: up 410% on the route-weighted index since 1973.

+410%Since 1973TrendPercent 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 →
97Routes 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 →
52YearsYears 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 →

Bald Eagle has surged in Northern Pacific Rainforest: up 410% on the route-weighted index since 1973.

Bald Eagle In Northern Pacific Rainforest Population Forecast

If the recent trend holds, Bald Eagle in Northern Pacific Rainforest is projected to rise about 28% by 2029 — from 2.3 in 2024 to a central estimate of 2.9 (95% range 1.6–4.3). A 5-year backtest shows a typical error of ±28.1%, 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 →
2.9Projected 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 →
1.6–4.395% 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 →
±28.1%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, Bald Eagle in Northern Pacific Rainforest is projected to rise about 28% by 2029 — from 2.3 in 2024 to a central estimate of 2.9 (95% range 1.6–4.3). A 5-year backtest shows a typical error of ±28.1%, with 100% of held-out values landing inside the 95% band.19712029
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 →
20252.81.44.1
20262.81.44.2
20272.81.54.2
20282.91.54.2
20292.91.64.3

Routes In Northern Pacific Rainforest

Routes recording Bald Eagle in Northern Pacific Rainforest.
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 →
Sitka (Short)ALASKA961992
KetchikanALASKA662022
JuneauALASKA482024
SitkaALASKA232024
HainesALASKA152024
PetersburgALASKA131987
YakutatALASKA102024
Zimovia StrtALASKA82024
OzetteWASHINGTON82024
Copper RiverALASKA72011
Stikine RiverALASKA72024
Juneau AltALASKA61986
Thorne Bay 2ALASKA62024
CraigALASKA52023
CordovaALASKA52024
Chichagof IsALASKA52024
Wrangell (Short)ALASKA51984
Horse CreekCALIFORNIA52018
Port AngelesWASHINGTON52023
TaholahWASHINGTON52022
South ElmaWASHINGTON42024
Bay ViewWASHINGTON42017
Thorne BayALASKA32012
HopeALASKA32024
HoonahALASKA32024

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