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

Broad-winged Hawk Population Trend in Illinois

All statesGeneralists

Broad-winged Hawk in Illinois has declined: down 29% on the route-weighted index since 1974.

-29%Since 1974
13Routes In State
20Years

Notable Broad-winged Hawk Trends in Illinois

No notable trend signals for Broad-winged Hawk in Illinois. See the full index history below.

Broad-winged Hawk Population Forecast in Illinois

If the recent trend holds, Broad-winged Hawk in Illinois is projected to stay roughly flat through 2028, near 0.01 (95% range 0.00–0.03). A 5-year backtest shows a typical error of ±42.6%, with 80% of held-out values landing inside the 95% band.

n/aChange by 2028
0.01Projected 2028 index
0.00–0.0395% range
±42.6%Backtest error
19682028
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
20240.020.000.04
20250.020.000.04
20260.020.000.03
20270.010.000.03
20280.010.000.03

Broad-winged Hawk Survey Routes in Illinois

Routes recording Broad-winged Hawk in Illinois.
Wayne219981998
Dudleyville220132013
Pulaski220222006
Royalton120042004
Guilford119901984
Mill Creek119971997
Belleview119961993
Sandusky120002000
Cave In Rock120232000
New Lenox119681968
Bremen120181998
Delwood119961996
Beaverdam Lk119741970

Broad-winged Hawk Population Trend in Other States

alabamaarkansasconnecticutdelawarefloridageorgiaindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourinew-hampshirenew-jerseynew-yorknorth-carolinanorth-dakotaohiooklahomapennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasvermontvirginiawest-virginiawisconsinwyoming

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