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

Common Yellowthroat Population Trend in Utah

All statesForest birds

Common Yellowthroat in Utah has surged: up 333% on the route-weighted index since 1982.

+333%Since 1982TrendPercent 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 →
45Routes 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 →
42YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Common Yellowthroat 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 →

long arc increasecomputed indexTrend sourceWhether the figure is our own computed route-weighted index or an official USGS modeled estimate. The current build labels every trend as computed.Full methodology →

Common Yellowthroat has surged in Utah: up 333% on the route-weighted index since 1982.

Common Yellowthroat Population Forecast in Utah

If the recent trend holds, Common Yellowthroat in Utah is projected to rise about 20% by 2029 — from 0.49 in 2024 to a central estimate of 0.59 (95% range 0.32–0.86). A 5-year backtest shows a typical error of ±34.4%, with 40% of held-out values landing inside the 95% band.

+20%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 →
0.32–0.8695% 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 →
±34.4%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, Common Yellowthroat in Utah is projected to rise about 20% by 2029 — from 0.49 in 2024 to a central estimate of 0.59 (95% range 0.32–0.86). A 5-year backtest shows a typical error of ±34.4%, with 40% 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 →
20250.550.270.82
20260.560.280.83
20270.570.290.84
20280.580.310.85
20290.590.320.86

Common Yellowthroat Survey Routes in Utah

Routes recording Common Yellowthroat 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 →
Callao2020241994
Bear River820231992
Randolph620241992
Lynn520231986
Goose Creek Mtn.520232009
Moab420231987
Hatch320232014
Promontory220231986
Neponset Res220132007
Goshen220191969
Grouse Creek219871986
Vernon220112009
Moon Lake219971997
Wellington 2220092003
Castle Dale220182006
Hill Creek219941994
Ant Flat-Ogden Can220232021
Jensen220221995
Wellington 3120192019
Moon Lake 2120232016
Salt Springs120221997
Timpie Spg120001982
Altonah120072007
Notch Peak120061986
Oak City120232023

Common Yellowthroat Population Trend in Other States

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

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