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

Red-shouldered Hawk Population Trend in Connecticut

All statesGeneralists

Red-shouldered Hawk in Connecticut has surged: up 16× on the route-weighted index since 1976.

16×Since 1976
19Routes In State
43Years

Notable Red-shouldered Hawk Trends in Connecticut

long arc increasecomputed index

Red-shouldered Hawk has surged in Connecticut: up 16× on the route-weighted index since 1976.

Red-shouldered Hawk Population Forecast in Connecticut

If the recent trend holds, Red-shouldered Hawk in Connecticut is projected to fall about 33% by 2029 — from 1.9 in 2024 to a central estimate of 1.3 (95% range 0.56–2.0). A 5-year backtest shows a typical error of ±39.1%, with 40% of held-out values landing inside the 95% band.

-33%Change by 2029
1.3Projected 2029 index
0.56–2.095% range
±39.1%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
20251.20.461.9
20261.20.481.9
20271.20.511.9
20281.20.542.0
20291.30.562.0

Red-shouldered Hawk Survey Routes in Connecticut

Routes recording Red-shouldered Hawk in Connecticut.
Willimantic520161980
No Woodbury420241978
Mid Haddam420241979
Warren 2420242017
Buckingham320222001
Woodstock320072007
Long Hill320191986
Westbrook220231977
Danbury220231968
Woodstock 2220242016
Granby220231996
Mystic120221976
E Hartland119851973
Uncasville120241999
Sherman120152015
Greenwich120171997
Warren120101979
Southington120241985
New Hartford120241997

Red-shouldered Hawk Population Trend in Other States

alabamaarkansascaliforniadelawarefloridageorgiaillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourinebraskanew-hampshirenew-jerseynew-yorknorth-carolinaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinatennesseetexasvermontvirginiawashingtonwest-virginiawisconsin

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