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

American Goldfinch Population Trend in Delaware

All statesGeneralists

American Goldfinch in Delaware has surged: up 142% on the route-weighted index since 1968.

+142%Since 1968
17Routes In State
58Years

Notable American Goldfinch Trends in Delaware

long arc increasecomputed index

American Goldfinch has surged in Delaware: up 142% on the route-weighted index since 1968.

American Goldfinch Population Forecast in Delaware

If the recent trend holds, American Goldfinch in Delaware is projected to rise about 53% by 2029 — from 11 in 2024 to a central estimate of 17 (95% range 11–23). A 5-year backtest shows a typical error of ±21.3%, with 100% of held-out values landing inside the 95% band.

+53%Change by 2029
17Projected 2029 index
11–2395% range
±21.3%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
2025169.622
2026169.822
2027161023
2028171023
2029171123

American Goldfinch Survey Routes in Delaware

Routes recording American Goldfinch in Delaware.
Milton2620161966
Wilmington2320141966
Georgetown2120221992
Harrington1820241966
Frederica1820141966
Holleyville1520041966
Pepperbox 21320242017
Milton 21220172017
Pepperbox1020161998
Frankford920121966
Millsboro920242017
Blackbird820241994
Mt Pleasant720191966
Holleyville 2720242006
Dover319871966
Bethany Bch219901966
Lowes Xrds119871966

American Goldfinch Population Trend in Other States

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

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