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

Broad-tailed Hummingbird Population Trend in Utah

All statesGeneralists

Broad-tailed Hummingbird in Utah has declined: down 41% on the route-weighted index since 1970.

-41%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 →
89Routes 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 →
56YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Broad-tailed Hummingbird 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 Broad-tailed Hummingbird in Utah. See the full index history below.

Broad-tailed Hummingbird Population Forecast in Utah

If the recent trend holds, Broad-tailed Hummingbird in Utah is projected to fall about 26% by 2029 — from 1.6 in 2024 to a central estimate of 1.2 (95% range 0.00–2.9). A 5-year backtest shows a typical error of ±55.6%, with 100% of held-out values landing inside the 95% band.

-26%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 →
1.2Projected 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 →
0.00–2.995% 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 →
±55.6%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, Broad-tailed Hummingbird in Utah is projected to fall about 26% by 2029 — from 1.6 in 2024 to a central estimate of 1.2 (95% range 0.00–2.9). A 5-year backtest shows a typical error of ±55.6%, with 100% of held-out values landing inside the 95% band.19682029
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 →
20251.30.003.1
20261.30.003.0
20271.30.003.0
20281.20.003.0
20291.20.002.9

Broad-tailed Hummingbird Survey Routes in Utah

Routes recording Broad-tailed Hummingbird 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 →
Beck1819871968
Wasatch Nf1820241988
Hyrum1619791975
Hardware Ranch1520231994
Lost Cr. Res1320181995
Uintah Nf1219941987
Navajo Lake1120241968
Fish Lake Nf1020241992
Beck 21020181990
La Sal 21020062003
Moon Lake820021993
Hill Creek819951993
Hanna820241998
Dixie Nf720241993
Heber Mtn.720241996
Hite619971995
M Warner Res620241994
Grizzly Rdge520241986
Beaver520241968
Hanksville520121987
Ant Flat-Ogden Can520231994
La Sal520001993
Newcastle520181997
Woodruff520242002
Richfield420191994

Broad-tailed Hummingbird Population Trend in Other States

arizonacaliforniacoloradoidahomontananevadanew-mexicosouth-dakotatexaswyoming

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