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Species · Louisiana · BBS 2026 Release · 1966–2025

Red-shouldered Hawk Population Trend in Louisiana

All statesBirds of prey

Red-shouldered Hawk in Louisiana has surged: up 328% on the route-weighted index since 1969.

+328%Since 1969TrendPercent 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 →
86Routes 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 →
58YearsYears 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-shouldered Hawk Trends in LouisianaNotable 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-shouldered Hawk has surged in Louisiana: up 328% on the route-weighted index since 1969.

Red-shouldered Hawk Population Forecast in Louisiana

If the recent trend holds, Red-shouldered Hawk in Louisiana is projected to fall about 12% by 2030 — from 2.7 in 2025 to a central estimate of 2.4 (95% range 1.3–3.4). A 5-year backtest shows a typical error of ±17.6%, with 100% of held-out values landing inside the 95% band.

-12%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 →
2.4Projected 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 →
1.3–3.495% 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 →
±17.6%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-shouldered Hawk in Louisiana is projected to fall about 12% by 2030 — from 2.7 in 2025 to a central estimate of 2.4 (95% range 1.3–3.4). A 5-year backtest shows a typical error of ±17.6%, with 100% of held-out values landing inside the 95% band.19672030
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 →
20262.31.23.3
20272.31.23.4
20282.31.23.4
20292.31.33.4
20302.41.33.4

Red-shouldered Hawk Survey Routes in Louisiana

Routes recording Red-shouldered Hawk in Louisiana.
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 →
Kraemer2020251997
Ramah1720251988
Carterville919921992
Mount Union920251998
Lafitte719911967
Lacombe719831969
Flat Creek720251998
Evelyn720232004
Junior619911987
Larose619921990
Roseland520251967
Fishville520161979
Goodwill520252004
Vinton520092008
Hackberry420161991
Many419921990
Fort Jessup420231998
Atchafalaya420251989
Vinton 2420252011
Fillmore319891968
Ville Platte320191995
Oakdale319941991
Hackberry 2320252018
Grayson320212005
Franklinton320252008

Red-shouldered Hawk Population Trend in Other States

alabamaarkansascaliforniaconnecticutdelawarefloridageorgiaillinoisindianaiowakansaskentuckymainemarylandmassachusettsmichiganminnesotamississippimissourinebraskanew-hampshirenew-jerseynew-yorknorth-carolinaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinatennesseetexasvermontvirginiawashingtonwest-virginiawisconsin

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