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

Cooper's Hawk Population Trend in Delaware

All statesGeneralists

Cooper's Hawk in Delaware has surged: up 164% on the route-weighted index since 1996.

+164%Since 1996
12Routes In State
25Years

Notable Cooper's Hawk Trends in Delaware

long arc increasecomputed index

Cooper's Hawk has surged in Delaware: up 164% on the route-weighted index since 1996.

Cooper's Hawk Population Forecast in Delaware

If the recent trend holds, Cooper's Hawk in Delaware is projected to stay roughly flat through 2029, near 0.40 (95% range 0.14–0.67). A 5-year backtest shows a typical error of ±35.8%, with 100% of held-out values landing inside the 95% band.

+1%Change by 2029
0.40Projected 2029 index
0.14–0.6795% range
±35.8%Backtest error
19722029
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
20250.380.120.64
20260.390.120.65
20270.390.130.65
20280.400.130.66
20290.400.140.67

Cooper's Hawk Survey Routes in Delaware

Routes recording Cooper's Hawk in Delaware.
Holleyville220031972
Holleyville 2220182007
Mt Pleasant120061999
Wilmington120132008
Harrington120241999
Frederica120141975
Frankford120122012
Blackbird120192003
Milton120162005
Pepperbox120062006
Georgetown120072007
Pepperbox 2120242019

Cooper's Hawk Population Trend in Other States

alabamaarizonaarkansascaliforniacoloradoconnecticutfloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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