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

Red-shouldered Hawk Population Trend in Louisiana

All statesGeneralists

Red-shouldered Hawk in Louisiana has surged: up 326% on the route-weighted index since 1969.

+326%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 →
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-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 326% 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 10% by 2029 — from 2.6 in 2024 to a central estimate of 2.3 (95% range 1.2–3.4). A 5-year backtest shows a typical error of ±23.6%, with 100% of held-out values landing inside the 95% band.

-10%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 →
2.3Projected 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 →
1.2–3.495% 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 →
±23.6%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 10% by 2029 — from 2.6 in 2024 to a central estimate of 2.3 (95% range 1.2–3.4). A 5-year backtest shows a typical error of ±23.6%, with 100% of held-out values landing inside the 95% band.19672029
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 →
20252.21.13.3
20262.21.23.3
20272.31.23.3
20282.31.23.3
20292.31.23.4

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 →
Kraemer1820241997
Ramah1620241988
Carterville919921992
Mount Union820241998
Goodwill820242004
Lafitte719911967
Lacombe719831969
Evelyn720232004
Junior619911987
Larose619921990
Linville620241999
Tensas Nwr620241987
Fishville520161979
Vinton520092008
Hackberry420161991
Longstreet420241969
Many419921990
Fort Jessup420231998
Atchafalaya420241989
Fillmore319891968
Womack320242000
Ville Platte320191995
Oakdale319941991
Natchez320241992
Ivan 2320162014

Red-shouldered Hawk Population Trend in Other States

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

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