BirdAnalyst
Species · New Jersey · BBS 2025 Release · 1966–2024

Cooper's Hawk Population Trend in New Jersey

All statesGeneralists

Cooper's Hawk in New Jersey has surged: up 359% on the route-weighted index since 1988.

+359%Since 1988
25Routes In State
34Years

Notable Cooper's Hawk Trends in New Jersey

long arc increasecomputed index

Cooper's Hawk has surged in New Jersey: up 359% on the route-weighted index since 1988.

Cooper's Hawk Population Forecast in New Jersey

If the recent trend holds, Cooper's Hawk in New Jersey is projected to fall about 13% by 2029 — from 0.29 in 2024 to a central estimate of 0.25 (95% range 0.06–0.44). A 5-year backtest shows a typical error of ±128.9%, with 80% of held-out values landing inside the 95% band.

-13%Change by 2029
0.25Projected 2029 index
0.06–0.4495% range
±128.9%Backtest error
19772029
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
20250.230.040.42
20260.240.040.43
20270.240.050.43
20280.240.050.44
20290.250.060.44

Cooper's Hawk Survey Routes in New Jersey

Routes recording Cooper's Hawk in New Jersey.
Sandbrook220231997
Pottersville220111996
Cranbury220242002
Woodbury Hgt120241994
Greenwich120231995
Bennett Mill120002000
Holmansville119921992
New Bedford120241997
Croton120011989
Hope119911991
Kemah Lake120241991
Bloomsbury120231988
High Point120151980
Dover120222022
Gillette120231999
Keyport120172016
Roosevelt120132013
Friendship120231997
Pomona120232022
Mt Misery119771977
Pedricktown 2120242015
Cape May Ch120132005
Pedricktown120122005
Bennett Mill 2120162016
Ramseysburg120191995

Cooper's Hawk Population Trend in Other States

alabamaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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