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

Red-tailed Hawk Population Trend in Utah

All statesBirds of prey

Red-tailed Hawk in Utah has declined: down 32% on the route-weighted index since 1970.

-32%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 →
112Routes 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 Red-tailed Hawk 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 Red-tailed Hawk in Utah. See the full index history below.

Red-tailed Hawk Population Forecast in Utah

If the recent trend holds, Red-tailed Hawk in Utah is projected to fall about 10% by 2030 — from 1.4 in 2025 to a central estimate of 1.3 (95% range 0.07–2.5). A 5-year backtest shows a typical error of ±8.1%, with 100% of held-out values landing inside the 95% band.

-10%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 →
1.3Projected 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 →
0.07–2.595% 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 →
±8.1%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, Red-tailed Hawk in Utah is projected to fall about 10% by 2030 — from 1.4 in 2025 to a central estimate of 1.3 (95% range 0.07–2.5). A 5-year backtest shows a typical error of ±8.1%, 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 →
20261.30.082.5
20271.30.082.5
20281.30.072.5
20291.30.072.5
20301.30.072.5

Red-tailed Hawk Survey Routes in Utah

Routes recording Red-tailed Hawk 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 →
Grantsville720252001
Timpie Spg620031978
Uintah Nf519921987
Leamington520171992
Shivwitz520251992
Kamas520251998
Wellington 3420242016
Altonah420151972
Grouse Creek420101982
Delta420251994
Gooseberry420251994
Gandy420152001
Pine Creek420251997
Promontory320251969
Fairfield320241987
Vernon320251992
Richfield320191994
La Sal319941994
Dixie Nf320251993
Lake Powell320071993
Beck 2320251990
Iron Springs 2320252024
La Sal 2320062003
Goose Creek Mtn.320251997
Newcastle320251997

Red-tailed Hawk 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.