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

Field Sparrow Population Trend in Vermont

All statesGeneralists

Field Sparrow in Vermont has collapsed: down 87% on the route-weighted index since 1968.

-87%Since 1968
26Routes In State
58Years

Notable Field Sparrow Trends in Vermont

long arc declinecomputed index

Field Sparrow has collapsed in Vermont: down 87% on the route-weighted index since 1968.

Field Sparrow Population Forecast in Vermont

If the recent trend holds, Field Sparrow in Vermont is projected to fall about 100% by 2029 — from 0.39 in 2024 to a central estimate of 0.00 (95% range 0.00–1.6). A 5-year backtest shows a typical error of ±210.9%, with 100% of held-out values landing inside the 95% band.

-100%Change by 2029
0.00Projected 2029 index
0.00–1.695% range
±210.9%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
20250.000.001.6
20260.000.001.6
20270.000.001.6
20280.000.001.6
20290.000.001.6

Field Sparrow Survey Routes in Vermont

Routes recording Field Sparrow in Vermont.
Shaftsbury320241966
Colchester319951994
Landgrove219931966
St Johnsbury220011970
Newbury219921992
Fletcher220171973
Waterville219731967
Marlboro120231966
North Pownal120241966
Stratton119761966
S Reading120241966
Gaysville120121990
Post Mills120221966
S Wallingfrd120221966
W Rutland120241966
East Haven119921966
Northfld Fls120181980
Middlesex120151968
East Calais120241968
Hardwick119921966
Greensboro119901967
Hinesburg119931966
Grand Isle120191967
Newbury 2120232009
Stowe119991999

Field Sparrow Population Trend in Other States

alabamaarkansascoloradoconnecticutdelawarefloridageorgiaillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanew-hampshirenew-jerseynew-yorknorth-carolinanorth-dakotaohiooklahomapennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasvirginiawest-virginiawisconsinwyoming

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