BirdAnalyst
Species · BCR 5 · BBS 2026 Release · 1966–2025

Wood Duck In Northern Pacific Rainforest

All regionsNorthern Pacific RainforestWaterfowl

Wood Duck in Northern Pacific Rainforest has increased: up 30% on the route-weighted index since 1970.

+30%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 →
67Routes 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 →
57YearsYears 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 Wood Duck in Northern Pacific Rainforest. See the full index history below.

Wood Duck In Northern Pacific Rainforest Population Forecast

If the recent trend holds, Wood Duck in Northern Pacific Rainforest is projected to fall about 43% by 2030 — from 0.29 in 2025 to a central estimate of 0.16 (95% range 0.00–0.43). A 5-year backtest shows a typical error of ±40%, with 100% of held-out values landing inside the 95% band.

-43%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 →
0.16Projected 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 →
0.00–0.4395% 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%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, Wood Duck in Northern Pacific Rainforest is projected to fall about 43% by 2030 — from 0.29 in 2025 to a central estimate of 0.16 (95% range 0.00–0.43). A 5-year backtest shows a typical error of ±40%, with 100% of held-out values landing inside the 95% band.19682030
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 →
20260.170.000.44
20270.170.000.44
20280.170.000.44
20290.160.000.43
20300.160.000.43

Routes In Northern Pacific Rainforest

Routes recording Wood Duck 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 →
MukilteoWASHINGTON152025
Sandy RiverOREGON122006
Nicolai Mtn.OREGON102024
HoneydewCALIFORNIA82012
Port AngelesWASHINGTON71984
YrekaCALIFORNIA52011
Emigrant LkOREGON42001
RuchOREGON42016
EverettWASHINGTON42024
Horse CreekCALIFORNIA32019
MccloudCALIFORNIA31984
SaladoOREGON31988
Days CreekOREGON32011
ClearwaterOREGON32021
Mendota 2WASHINGTON31995
GazelleCALIFORNIA21991
Redwood N.P.CALIFORNIA22009
HauserOREGON21979
WinberryOREGON21973
AdairOREGON21975
DaytonOREGON22005
GarfieldOREGON21998
GlasgowOREGON21996
CanbyOREGON22014
WaldportOREGON21997

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