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

Red-tailed Hawk Population Trend in Nevada

All statesGeneralists

Red-tailed Hawk in Nevada has surged: up 422% on the route-weighted index since 1970.

+422%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 →
53Routes 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 →
50YearsYears 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 NevadaNotable 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 →

Red-tailed Hawk has surged in Nevada: up 422% on the route-weighted index since 1970.

Red-tailed Hawk Population Forecast in Nevada

If the recent trend holds, Red-tailed Hawk in Nevada is projected to rise about 27% by 2029 — from 2.1 in 2024 to a central estimate of 2.6 (95% range 1.4–3.9). A 5-year backtest shows a typical error of ±32.6%, with 100% of held-out values landing inside the 95% band.

+27%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 →
2.6Projected 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 →
1.4–3.995% 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 →
±32.6%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, Red-tailed Hawk in Nevada is projected to rise about 27% by 2029 — from 2.1 in 2024 to a central estimate of 2.6 (95% range 1.4–3.9). A 5-year backtest shows a typical error of ±32.6%, 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 →
20252.51.33.8
20262.51.33.8
20272.61.33.8
20282.61.43.8
20292.61.43.9

Red-tailed Hawk Survey Routes in Nevada

Routes recording Red-tailed Hawk in Nevada.
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 →
Nixon1020241973
Meadow Vally620241996
Fallon620241992
Piute Mdws520242013
Dinner Sta519931968
Rye Patch519871968
Ruby Valley520011997
Carson River420052001
Cortez320241972
Majors Place320241989
Gardnerville320121992
Caliente320211988
Nelson320241995
Austin320172009
Calico Spr219741968
Toiyabe Nf220241995
Desert Nwr220241994
Dobbin Creek220181972
Minerva220241988
Jarbidge220151997
Humboldt Nf220181993
Sheldon Nwr220191992
Ash Meadows220231994
Mill City220232013
Oreana220032002

Red-tailed Hawk Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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