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

House Finch In Northern Pacific Rainforest

All regionsNorthern Pacific RainforestGeneralists

House Finch in Northern Pacific Rainforest has declined: down 38% on the route-weighted index since 1970.

-38%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 →
90Routes 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 House Finch in Northern Pacific Rainforest. See the full index history below.

House Finch In Northern Pacific Rainforest Population Forecast

If the recent trend holds, House Finch in Northern Pacific Rainforest is projected to fall about 60% by 2030 — from 7.8 in 2025 to a central estimate of 3.1 (95% range 0.00–6.4). A 5-year backtest shows a typical error of ±36.6%, with 60% of held-out values landing inside the 95% band.

-60%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 →
3.1Projected 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 →
0.00–6.495% 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 →
±36.6%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, House Finch in Northern Pacific Rainforest is projected to fall about 60% by 2030 — from 7.8 in 2025 to a central estimate of 3.1 (95% range 0.00–6.4). A 5-year backtest shows a typical error of ±36.6%, with 60% 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 →
20263.50.256.8
20273.40.156.7
20283.30.066.6
20293.20.006.5
20303.10.006.4

Routes In Northern Pacific Rainforest

Routes recording House Finch 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 →
Port AngelesWASHINGTON1212025
DaytonOREGON872025
TualatinOREGON452025
SalemOREGON452025
CanbyOREGON352025
MukilteoWASHINGTON282025
Warm Beach 2WASHINGTON252024
ScappooseOREGON232025
Vashon Is.WASHINGTON222025
SvensenOREGON191992
Emigrant LkOREGON182001
GreenOREGON172025
GarfieldOREGON162025
Warm BeachWASHINGTON142017
AdairOREGON132025
UmpquaOREGON122025
EverettWASHINGTON122025
ElktonOREGON92025
Fish RockCALIFORNIA82014
NavarroCALIFORNIA82009
Bodega BayCALIFORNIA82019
YrekaCALIFORNIA82019
CamasWASHINGTON82018
RainierWASHINGTON82025
Rio DellCALIFORNIA72012

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