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

Red-tailed Hawk Population Trend in Delaware

All statesGeneralists

Red-tailed Hawk in Delaware has surged: up 564% on the route-weighted index since 1968.

+564%Since 1968
16Routes In State
55Years

Notable Red-tailed Hawk Trends in Delaware

long arc increasecomputed index

Red-tailed Hawk has surged in Delaware: up 564% on the route-weighted index since 1968.

Red-tailed Hawk Population Forecast in Delaware

If the recent trend holds, Red-tailed Hawk in Delaware is projected to rise about 24% by 2029 — from 2.2 in 2024 to a central estimate of 2.7 (95% range 1.6–3.8). A 5-year backtest shows a typical error of ±34.1%, with 100% of held-out values landing inside the 95% band.

+24%Change by 2029
2.7Projected 2029 index
1.6–3.895% range
±34.1%Backtest error
19662029
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
20252.61.53.7
20262.61.53.7
20272.71.63.8
20282.71.63.8
20292.71.63.8

Red-tailed Hawk Survey Routes in Delaware

Routes recording Red-tailed Hawk in Delaware.
Harrington420241971
Holleyville420041966
Milton 2420172017
Frankford320121966
Milton320161972
Pepperbox320162000
Pepperbox 2320242017
Dover219871975
Lowes Xrds219911966
Millsboro220242017
Mt Pleasant120181968
Wilmington120101984
Frederica120131981
Blackbird120241994
Holleyville 2120242006
Georgetown120211992

Red-tailed Hawk Population Trend in Other States

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

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