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Species · Wyoming · BBS 2026 Release · 1966–2025

Red-tailed Hawk Population Trend in Wyoming

All statesBirds of prey

Red-tailed Hawk in Wyoming has surged: up 79% on the route-weighted index since 1970.

+79%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 →
133Routes 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 WyomingNotable 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 Wyoming: up 79% on the route-weighted index since 1970.

Red-tailed Hawk Population Forecast in Wyoming

If the recent trend holds, Red-tailed Hawk in Wyoming is projected to rise about 33% by 2030 — from 1.4 in 2025 to a central estimate of 1.8 (95% range 1.2–2.5). A 5-year backtest shows a typical error of ±23.3%, with 100% of held-out values landing inside the 95% band.

+33%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 →
1.8Projected 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 →
1.2–2.595% 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 →
±23.3%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 Wyoming is projected to rise about 33% by 2030 — from 1.4 in 2025 to a central estimate of 1.8 (95% range 1.2–2.5). A 5-year backtest shows a typical error of ±23.3%, 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 →
20261.81.12.4
20271.81.12.4
20281.81.12.5
20291.81.22.5
20301.81.22.5

Red-tailed Hawk Survey Routes in Wyoming

Routes recording Red-tailed Hawk in Wyoming.
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 →
Mayoworth1220181983
Lovell720251990
Crowheart720161987
Boulder720251982
Farson720252018
Green River719841977
Walcott720251982
Wilson620251979
Carter620162006
Kaycee520222014
Cody420251990
Midvale420251988
Recluse420241981
Sussex420251991
Lusk420251982
Fox Park420001998
Harmony420231987
Otto320241971
Basin320231971
Dubois320251969
Natrona319911980
Bill320181974
Fontenelle320251982
Dwyer320251994
Tensleep320251996

Red-tailed Hawk Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsin

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