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

House Finch Population Trend in Delaware

All statesGeneralists

House Finch in Delaware has surged: up 29× on the route-weighted index since 1980.

29×Since 1980
17Routes In State
45Years

Notable House Finch Trends in Delaware

long arc increasecomputed index

House Finch has surged in Delaware: up 29× on the route-weighted index since 1980.

House Finch Population Forecast in Delaware

If the recent trend holds, House Finch in Delaware is projected to fall about 10% by 2029 — from 12 in 2024 to a central estimate of 10 (95% range 0.00–22). A 5-year backtest shows a typical error of ±36.2%, with 100% of held-out values landing inside the 95% band.

-10%Change by 2029
10Projected 2029 index
0.00–2295% range
±36.2%Backtest error
19782029
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
2025100.0022
2026100.0022
2027100.0022
2028100.0022
2029100.0022

House Finch Survey Routes in Delaware

Routes recording House Finch in Delaware.
Harrington3420241979
Bethany Bch2319901984
Holleyville 21820242006
Milton1720161987
Holleyville1220041988
Georgetown1220221992
Dover1019871985
Frederica620141980
Millsboro620222017
Mt Pleasant520191980
Wilmington420141978
Pepperbox 2420242017
Pepperbox320161998
Milton 2320172017
Frankford220121991
Blackbird220241994
Lowes Xrds119911991

House Finch Population Trend in Other States

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

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