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

American Goldfinch Population Trend in Connecticut

All statesGeneralists

American Goldfinch in Connecticut has surged: up 117% on the route-weighted index since 1968.

+117%Since 1968
20Routes In State
58Years

Notable American Goldfinch Trends in Connecticut

long arc increasecomputed index

American Goldfinch has surged in Connecticut: up 117% on the route-weighted index since 1968.

American Goldfinch Population Forecast in Connecticut

If the recent trend holds, American Goldfinch in Connecticut is projected to rise about 56% by 2029 — from 15 in 2024 to a central estimate of 24 (95% range 12–35). A 5-year backtest shows a typical error of ±54.9%, with 100% of held-out values landing inside the 95% band.

+56%Change by 2029
24Projected 2029 index
12–3595% range
±54.9%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
2025231134
2026231134
2027231235
2028241235
2029241235

American Goldfinch Survey Routes in Connecticut

Routes recording American Goldfinch in Connecticut.
Warren12120111972
Southington2920241973
Buckingham2320221966
Sherman2320191972
Mystic2020231973
Willimantic2020181967
Long Hill1920191973
Mid Haddam1920241973
Granby1820241988
Greenwich1620181968
Danbury1620231968
Woodstock1520071968
Westbrook1420241969
No Woodbury1420241967
Woodstock 21420242016
Uncasville1320241977
E Hartland1219921967
Warren 21120242012
New Hartford619871972
New Hartford620241994

American Goldfinch Population Trend in Other States

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

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