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

Common Yellowthroat In Northern Pacific Rainforest

All regionsNorthern Pacific RainforestForest birds

Common Yellowthroat in Northern Pacific Rainforest has surged: up 307% on the route-weighted index since 1970.

+307%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 →
117Routes 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 →

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 →

Common Yellowthroat has surged in Northern Pacific Rainforest: up 307% on the route-weighted index since 1970.

Common Yellowthroat In Northern Pacific Rainforest Population Forecast

If the recent trend holds, Common Yellowthroat in Northern Pacific Rainforest is projected to stay roughly flat through 2029, near 5.1 (95% range 3.6–6.6). A 5-year backtest shows a typical error of ±15.5%, with 80% of held-out values landing inside the 95% band.

+2%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 →
5.1Projected 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 →
3.6–6.695% 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 →
±15.5%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, Common Yellowthroat in Northern Pacific Rainforest is projected to stay roughly flat through 2029, near 5.1 (95% range 3.6–6.6). A 5-year backtest shows a typical error of ±15.5%, with 80% 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 →
20254.93.46.4
20264.93.46.5
20275.03.56.5
20285.13.56.6
20295.13.66.6

Routes In Northern Pacific Rainforest

Routes recording Common Yellowthroat 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 →
CarnationWASHINGTON442024
South ElmaWASHINGTON342024
Pe EllWASHINGTON322023
AdairOREGON272024
EverettWASHINGTON232024
Mendota 3WASHINGTON202024
Bunker HillWASHINGTON192024
Nicolai Mtn.OREGON182024
Raymond 2WASHINGTON182024
MendotaWASHINGTON161988
RaymondWASHINGTON162021
SalemOREGON152024
MontesandWASHINGTON152024
Mendota 2WASHINGTON152000
SvensenOREGON141992
MukilteoWASHINGTON132024
McchordWASHINGTON132015
Warm BeachWASHINGTON122017
ElktonOREGON112024
GreenOREGON112024
ScappooseOREGON102023
OzetteWASHINGTON102024
UmpquaOREGON92024
Kuiu IslandALASKA82010
CamasWASHINGTON82009

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