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Species · Delaware · BBS 2025 Release · 1966–2024

Red-shouldered Hawk Population Trend in Delaware

All statesGeneralists

Red-shouldered Hawk in Delaware has surged: up 776% on the route-weighted index since 1974.

+776%Since 1974
14Routes In State
31Years

Notable Red-shouldered Hawk Trends in Delaware

long arc increasecomputed index

Red-shouldered Hawk has surged in Delaware: up 776% on the route-weighted index since 1974.

Red-shouldered Hawk Population Forecast in Delaware

If the recent trend holds, Red-shouldered Hawk in Delaware is projected to fall about 39% by 2029 — from 1.0 in 2024 to a central estimate of 0.61 (95% range 0.11–1.1). A 5-year backtest shows a typical error of ±60.7%, with 60% of held-out values landing inside the 95% band.

-39%Change by 2029
0.61Projected 2029 index
0.11–1.195% range
±60.7%Backtest error
19702029
Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.
YearProjected index95% low95% high
20250.570.071.1
20260.580.081.1
20270.590.091.1
20280.600.101.1
20290.610.111.1

Red-shouldered Hawk Survey Routes in Delaware

Routes recording Red-shouldered Hawk in Delaware.
Mt Pleasant220191987
Wilmington220141997
Frankford220071998
Millsboro220242023
Holleyville 2220242015
Pepperbox220162005
Harrington120232005
Frederica120142009
Holleyville120011975
Lowes Xrds119781970
Blackbird120222017
Milton120082008
Georgetown120222001
Pepperbox 2120242018

Red-shouldered Hawk Population Trend in Other States

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

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