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

Western Wood-Pewee In Northern Pacific Rainforest

All regionsNorthern Pacific RainforestAerial insectivores

Western Wood-Pewee in Northern Pacific Rainforest has declined: down 49% on the route-weighted index since 1970.

-49%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 →
143Routes 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 →
56YearsYears 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 Western Wood-Pewee in Northern Pacific Rainforest. See the full index history below.

Western Wood-Pewee In Northern Pacific Rainforest Population Forecast

If the recent trend holds, Western Wood-Pewee in Northern Pacific Rainforest is projected to fall about 27% by 2029 — from 5.8 in 2024 to a central estimate of 4.2 (95% range 1.1–7.3). A 5-year backtest shows a typical error of ±33.8%, with 100% of held-out values landing inside the 95% band.

-27%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 →
4.2Projected 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 →
1.1–7.395% 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 →
±33.8%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, Western Wood-Pewee in Northern Pacific Rainforest is projected to fall about 27% by 2029 — from 5.8 in 2024 to a central estimate of 4.2 (95% range 1.1–7.3). A 5-year backtest shows a typical error of ±33.8%, 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 →
20254.61.47.7
20264.51.47.6
20274.41.37.5
20284.31.27.4
20294.21.17.3

Routes In Northern Pacific Rainforest

Routes recording Western Wood-Pewee 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 →
Horse CreekCALIFORNIA532019
GreenOREGON332024
AdairOREGON302024
ElktonOREGON302024
Pe EllWASHINGTON262023
HoneydewCALIFORNIA252017
UmpquaOREGON242024
RuchOREGON242023
CarrvilleCALIFORNIA221970
SalemOREGON212024
Shasta LakeCALIFORNIA192012
DaytonOREGON192024
Sandy RiverOREGON192006
Junction CtyCALIFORNIA182011
EverettWASHINGTON172024
MukilteoWASHINGTON172024
SaladoOREGON162024
ScioOREGON162024
CarnationWASHINGTON162024
Hay ForkCALIFORNIA152017
Burnt RanchCALIFORNIA142016
GazelleCALIFORNIA142021
GarfieldOREGON142023
CoquilleOREGON142024
ScappooseOREGON142023

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