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

Cooper's Hawk Population Trend in California

All statesGeneralists

Cooper's Hawk in California has edged up: up 11% on the route-weighted index since 1970.

+11%Since 1970
160Routes In State
56Years

Notable Cooper's Hawk Trends in California

No notable trend signals for Cooper's Hawk in California. See the full index history below.

Cooper's Hawk Population Forecast in California

If the recent trend holds, Cooper's Hawk in California is projected to rise about 34% by 2029 — from 0.10 in 2024 to a central estimate of 0.13 (95% range 0.05–0.21). A 5-year backtest shows a typical error of ±44.1%, with 100% of held-out values landing inside the 95% band.

+34%Change by 2029
0.13Projected 2029 index
0.05–0.2195% range
±44.1%Backtest error
19682029
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
20250.130.040.21
20260.130.050.21
20270.130.050.21
20280.130.050.21
20290.130.050.21

Cooper's Hawk Survey Routes in California

Routes recording Cooper's Hawk in California.
Sawmill Mtn419931974
Lockwood Val320111976
Jofegan 2220242024
Wildrose220212021
Parkfield220231972
Santa Ynez220131976
Orange Cove220161974
Jacumba220161976
Arvin220132013
Jackson219841975
Longvale220111998
Redding219771977
Offield Mtn219781973
Coyote220231976
Copperopolis220141975
Cleveland Nf219961996
Tres Pinos 2220092005
Harbor Lake 2220242019
Alamar220002000
Horse Creek120171977
Crescent Cty119941979
Honeydew120141984
Holmes120242024
Red Bluff120212010
Eagle Lake120031974

Cooper's Hawk Population Trend in Other States

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

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