Species · BBS 2026 Release · 1966–2025

Red-shouldered Hawk Population Analysis

Red-shouldered Hawk has surged: up 245% on the route-weighted index since 1968.

About the Red-shouldered Hawk

The Red-shouldered Hawk (Buteo lineatus) is a North American member of the Hawks, Eagles & Kites (Accipitridae). In this analysis it is grouped with the birds of prey.

Size
17.5–39.5 in long (45–100 cm) — a medium to large raptor (typical for the family)
Habitat
Open country, woodlands, cliffs and wetlands, hunting from the air or a high perch.
Diet
Live prey — small mammals, birds, reptiles, fish and large insects (carrion for vultures).
Range
Recorded on 2,001 Breeding Bird Survey routes across 38 states, most concentrated in the Southeastern Coastal Plain.
Family
Accipitridae · Birds of prey

Notable Red-shouldered Hawk TrendsNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →

Red-shouldered Hawk has surged in surveyed states: up 245% on the route-weighted index since 1968.

Red-shouldered Hawk Population Forecast

If the recent trend holds, Red-shouldered Hawk is projected to stay roughly flat through 2030, near 0.79 (95% range 0.64–0.93). A 5-year backtest shows a typical error of ±23.8%, with 0% of held-out values landing inside the 95% band.

If the recent trend holds, Red-shouldered Hawk is projected to stay roughly flat through 2030, near 0.79 (95% range 0.64–0.93). A 5-year backtest shows a typical error of ±23.8%, with 0% of held-out values landing inside the 95% band.19662030
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 →
20260.740.590.89
20270.750.600.90
20280.760.610.91
20290.770.630.92
20300.790.640.93

Where the Red-shouldered Hawk Is Detected

BBS routes recording Red-shouldered Hawk, sized by most recent count.

Red-shouldered Hawk Population Trend by State

Red-shouldered Hawk population trend by state.
TrendPercent 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 →Baseline yearThe first year of the smoothed window the trend is measured from. An earlier baseline means a longer record stands behind the number.Full methodology →Survey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
Alabama+741%1968103
Arkansas+400%196958
California+573%1970130
Connecticut13×197619
Delaware11×197415
Florida+95%1968125
Georgia+847%1968110
Illinois20×196951
Indiana+488%196845
Iowainsufficient datan/a4
Kansas+744%197423
Kentucky+757%196858
Louisiana+328%196986
Maine+4%197621
Maryland+879%196870
Massachusetts+420%196921
Michigan+251%197251
Minnesota-70%197517
Mississippi25×196869
Missouri27×197778
Nebraskainsufficient datan/a1
New Hampshire-4%196821
New Jersey+587%197718
New York+70%196875
North Carolina17×1968101
Ohio13×196853
Oklahoma+683%196943
Oregon12×200015
Pennsylvania+354%196892
Rhode Island+46%19865
South Carolina+185%196849
Tennessee29×196848
Texas+139%1969130
Vermont+81%197015
Virginia11×196976
Washingtoninsufficient datan/a2
West Virginia+311%196860
Wisconsin+8%196843

Red-shouldered Hawk Population Trend by Region

Bird Conservation Regions are the ecological unit for trends.

Red-shouldered Hawk population trend by Bird Conservation Region.
TrendPercent 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 →Baseline yearThe first year of the smoothed window the trend is measured from. An earlier baseline means a longer record stands behind the number.Full methodology →Survey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
Northern Pacific Rainforest+482%197442
Boreal Hardwood Transition-25%197144
Lower Great Lakes / St. Lawrence Plain+304%196850
Atlantic Northern Forest+130%196875
Sierra Nevada+91%198110
Central Mixed Grass Prairie+321%198824
Edwards Plateau+179%197617
Oaks and Prairies+616%196965
Eastern Tallgrass Prairie16×1968134
Prairie Hardwood Transition+221%196873
Central Hardwoods13×1968160
West Gulf Coastal Plain / Ouachitas+289%1969108
Mississippi Alluvial Valley+605%196960
Southeastern Coastal Plain+408%1968336
Appalachian Mountains13×1968313
Piedmont16×1969155
New England / Mid-Atlantic Coast+710%1968122
Peninsular Florida+84%196880
Coastal California+593%197091
Sonoran and Mojave Deserts-49%19804
Tamaulipan Brushlands+47%19748
Gulf Coastal Prairie+5%196929

Red-shouldered Hawk Conservation Status

Our route-weighted index shows it up about 245% since 1968.

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14. Trend is a route-weighted relative-abundance index, not an absolute population.