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Species · Maryland · BBS 2025 Release · 1966–2024

Cooper's Hawk Population Trend in Maryland

All statesGeneralists

Cooper's Hawk in Maryland has surged: up 13× on the route-weighted index since 1968.

13×Since 1968
64Routes In State
50Years

Notable Cooper's Hawk Trends in Maryland

long arc increasecomputed index

Cooper's Hawk has surged in Maryland: up 13× on the route-weighted index since 1968.

Cooper's Hawk Population Forecast in Maryland

If the recent trend holds, Cooper's Hawk in Maryland is projected to rise about 31% by 2029 — from 0.21 in 2024 to a central estimate of 0.28 (95% range 0.16–0.40). A 5-year backtest shows a typical error of ±34.3%, with 80% of held-out values landing inside the 95% band.

+31%Change by 2029
0.28Projected 2029 index
0.16–0.4095% range
±34.3%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
20250.260.140.38
20260.270.140.39
20270.270.150.39
20280.280.150.40
20290.280.160.40

Cooper's Hawk Survey Routes in Maryland

Routes recording Cooper's Hawk in Maryland.
Potomac Park220101999
Eklo220182005
Van Bibber220082000
Madonna220222015
St. George'S Island220172015
Ijamsville220221987
Pr Frederick220221991
Floyd120172010
Vindex119871983
Oldtown119861986
Williamsport120232001
Smithsburg120111983
Wolfsville120241970
Emmitsburg120242009
Fair Hill119941994
Olney120241990
Warfieldsbrg120131991
Pleasant Val120151984
Bachman Mill120241986
Fowblesburg120161993
Randallstown120131997
Walnut120112011
Berlin119921992
Beltsville120111987
Cheltenham119991988

Cooper's Hawk Population Trend in Other States

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

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