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Species · BCR 19 · BBS 2025 Release · 1966–2024

American Goldfinch In Central Mixed Grass Prairie

All regionsCentral Mixed Grass PrairieGeneralists

American Goldfinch in Central Mixed Grass Prairie has increased: up 35% on the route-weighted index since 1969.

+35%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 →
97Routes 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 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 41% by 2029 — from 2.4 in 2024 to a central estimate of 3.3 (95% range 2.0–4.6). A 5-year backtest shows a typical error of ±21.9%, with 100% of held-out values landing inside the 95% band.

+41%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 →
3.3Projected 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 →
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 →
±21.9%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 41% by 2029 — from 2.4 in 2024 to a central estimate of 3.3 (95% range 2.0–4.6). A 5-year backtest shows a typical error of ±21.9%, with 100% of held-out values landing inside the 95% band.19672029
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 →
20253.21.94.5
20263.21.94.5
20273.32.04.5
20283.32.04.6
20293.32.04.6

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 →
ChambersNEBRASKA212023
NenzelNEBRASKA192024
LibertyNEBRASKA182003
Wheeler CoNEBRASKA122024
Berwyn 2NEBRASKA122021
Jewell 2KANSAS112024
MinneapolisKANSAS82019
JamestownKANSAS82024
SumnerNEBRASKA82024
BassettNEBRASKA82024
HendleyNEBRASKA82023
WellingtonKANSAS72024
BuckeyeKANSAS72023
HollenbergKANSAS72023
CovertKANSAS72024
KearneyNEBRASKA72024
AlmeriaNEBRASKA72021
JewellKANSAS62005
LoganKANSAS62006
BradyNEBRASKA62024
Ft Sill EastOKLAHOMA61994
JohnstownNEBRASKA52024
TableNEBRASKA52022
ArthurNEBRASKA52024
BerwynNEBRASKA52010

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