BirdAnalyst
Species · BCR 9 · BBS 2026 Release · 1966–2025

American Goldfinch In Great Basin

All regionsGreat BasinForest birds

American Goldfinch in Great Basin has increased: up 29% on the route-weighted index since 1970.

+29%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 →
150Routes 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 American Goldfinch in Great Basin. See the full index history below.

American Goldfinch In Great Basin Population Forecast

If the recent trend holds, American Goldfinch in Great Basin is projected to rise about 37% by 2030 — from 1.6 in 2025 to a central estimate of 2.1 (95% range 1.1–3.2). A 5-year backtest shows a typical error of ±25.2%, with 100% of held-out values landing inside the 95% band.

+37%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 →
2.1Projected 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 →
1.1–3.295% 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 →
±25.2%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, American Goldfinch in Great Basin is projected to rise about 37% by 2030 — from 1.6 in 2025 to a central estimate of 2.1 (95% range 1.1–3.2). A 5-year backtest shows a typical error of ±25.2%, 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 →
20262.11.13.1
20272.11.13.2
20282.11.13.2
20292.11.13.2
20302.11.13.2

Routes In Great Basin

Routes recording American Goldfinch in Great Basin.
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 →
Modoc Point 2OREGON292025
Mt HoodOREGON282025
Modoc PointOREGON212018
Glenns FerryIDAHO201986
AlmoIDAHO202025
Hardware RanchUTAH202023
TwispWASHINGTON202024
PotholesWASHINGTON172023
ReardanWASHINGTON162024
KendallWASHINGTON162025
DorrisCALIFORNIA152019
WilburWASHINGTON152024
BrewsterWASHINGTON122018
Scootney ReservoirWASHINGTON112025
NighthawkWASHINGTON102025
PocatelloIDAHO92019
Meadow VallyNEVADA92001
UmatillaOREGON92023
WaitsburgWASHINGTON92004
Turnbull NwrWASHINGTON92023
Magic MtnIDAHO82025
NewhalemWASHINGTON82025
WapatoWASHINGTON82022
LeavenworthWASHINGTON82024
EllensburgWASHINGTON82025

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