BirdAnalyst
Species · Utah · BBS 2026 Release · 1966–2025

American Robin Population Trend in Utah

All statesForest birds

American Robin in Utah has held roughly steady: up 7% on the route-weighted index since 1970.

+7%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 →
97Routes 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 →
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 American Robin 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 Robin in Utah. See the full index history below.

American Robin Population Forecast in Utah

If the recent trend holds, American Robin in Utah is projected to rise about 24% by 2030 — from 15 in 2025 to a central estimate of 19 (95% range 11–28). A 5-year backtest shows a typical error of ±33%, with 100% of held-out values landing inside the 95% band.

+24%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 →
19Projected 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 →
11–2895% 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 →
±33%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 Robin in Utah is projected to rise about 24% by 2030 — from 15 in 2025 to a central estimate of 19 (95% range 11–28). A 5-year backtest shows a typical error of ±33%, 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 →
2026191127
2027191127
2028191127
2029191127
2030191128

American Robin Survey Routes in Utah

Routes recording American Robin 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 →
Red Spur Mtn.8120231997
Logan Canyon7720191997
Ferron7420252000
Navajo Lake7220251968
Kamas7120251997
Soapstone6920251992
Woodruff6620252002
Uintah Nf6519941987
Grizzly Rdge6320251986
Gooseberry6220251994
Hanna5720241997
Wasatch Nf5020241988
Beck 25020251990
Lost Cr. Res5020181995
Beck4619871968
Dixie Nf4220251993
Ant Flat-Ogden Can3920251994
Fish Lake Nf3820251992
Heber Mtn.3720251996
Hyrum3619791975
Hardware Ranch2920231994
Skyline Driv2820251986
La Sal 32820252007
Beaver2720251968
M Warner Res2720251993

American Robin Population Trend in Other States

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

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