BirdAnalyst
Species · Utah · BBS 2025 Release · 1966–2024

American Goldfinch Population Trend in Utah

All statesGeneralists

American Goldfinch in Utah has edged up: up 24% on the route-weighted index since 1971.

+24%Since 1971TrendPercent 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 →
64Routes In StateSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
52YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable American Goldfinch Trends in UtahNotable 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 Utah. See the full index history below.

American Goldfinch Population Forecast in Utah

If the recent trend holds, American Goldfinch in Utah is projected to rise about 95% by 2029 — from 0.30 in 2024 to a central estimate of 0.59 (95% range 0.00–1.4). A 5-year backtest shows a typical error of ±46.5%, with 100% of held-out values landing inside the 95% band.

+95%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 →
0.59Projected 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 →
0.00–1.495% 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 →
±46.5%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, American Goldfinch in Utah is projected to rise about 95% by 2029 — from 0.30 in 2024 to a central estimate of 0.59 (95% range 0.00–1.4). A 5-year backtest shows a typical error of ±46.5%, with 100% of held-out values landing inside the 95% band.19692029
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 →
20250.600.001.4
20260.600.001.4
20270.590.001.4
20280.590.001.4
20290.590.001.4

American Goldfinch Survey Routes in Utah

Routes recording American Goldfinch in Utah.
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 →
Hardware Ranch2020231994
La Sal1019931993
Ant Flat-Ogden Can1020231994
Dixie Nf819981995
Jericho Junction720102008
Moon Lake 2420232004
Lost Cr. Res420151995
Notom419951995
Hyrum319791975
Willow Creek319951995
Castleton319731973
Woodruff320242002
Vernon320021993
Leamington320151992
Shivwitz320131995
Goose Creek Mtn.320231998
Kamas320241997
Hanna320241997
Bicknell320032003
La Sal 3320242007
Altonah220151970
Saleratus Cr220121995
Goshen220221969
Logan Canyon220141998
Hite219971995

American Goldfinch Population Trend in Other States

alabamaarkansascaliforniacoloradoconnecticutdelawaregeorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasvermontvirginiawashingtonwest-virginiawisconsinwyoming

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