BirdAnalyst
Species · BCR 19 · BBS 2026 Release · 1966–2025

American Goldfinch In Central Mixed Grass Prairie

All regionsCentral Mixed Grass PrairieForest birds

American Goldfinch in Central Mixed Grass Prairie has increased: up 36% on the route-weighted index since 1969.

+36%Since 1969TrendPercent 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 →
98Routes 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 →
58YearsYears 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 Central Mixed Grass Prairie. See the full index history below.

American Goldfinch In Central Mixed Grass Prairie Population Forecast

If the recent trend holds, American Goldfinch in Central Mixed Grass Prairie is projected to rise about 21% by 2030 — from 2.7 in 2025 to a central estimate of 3.3 (95% range 2.0–4.6). A 5-year backtest shows a typical error of ±18.7%, with 100% of held-out values landing inside the 95% band.

+21%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 →
3.3Projected 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 →
2.0–4.695% 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 →
±18.7%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 Central Mixed Grass Prairie is projected to rise about 21% by 2030 — from 2.7 in 2025 to a central estimate of 3.3 (95% range 2.0–4.6). A 5-year backtest shows a typical error of ±18.7%, with 100% of held-out values landing inside the 95% band.19672030
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 →
20263.21.94.5
20273.21.94.5
20283.32.04.5
20293.32.04.6
20303.32.04.6

Routes In Central Mixed Grass Prairie

Routes recording American Goldfinch in Central Mixed Grass Prairie.
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 →
Berwyn 2NEBRASKA202025
LibertyNEBRASKA182003
Wheeler CoNEBRASKA162025
NenzelNEBRASKA152025
BradyNEBRASKA142025
KanopolisKANSAS132025
WellingtonKANSAS92025
BartleyNEBRASKA92025
MinneapolisKANSAS82019
SumnerNEBRASKA82025
BuckeyeKANSAS72023
AlmeriaNEBRASKA72021
JohnstownNEBRASKA72025
BassettNEBRASKA72025
HendleyNEBRASKA72025
JewellKANSAS62005
Jewell 2KANSAS62025
JamestownKANSAS62025
ChambersNEBRASKA62025
Ft Sill EastOKLAHOMA61994
HollenbergKANSAS52025
Swan LakeNEBRASKA52025
BerwynNEBRASKA52010
BoelusNEBRASKA52022
DaltonKANSAS42025

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