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

Vesper Sparrow Population Trend in Vermont

All statesGrassland birds

Vesper Sparrow in Vermont has collapsed: down 88% on the route-weighted index since 1969.

-88%Since 1969
18Routes In State
29Years

Notable Vesper Sparrow Trends in Vermont

long arc declinecomputed index

Vesper Sparrow has collapsed in Vermont: down 88% on the route-weighted index since 1969.

Vesper Sparrow Population Forecast in Vermont

If the recent trend holds, Vesper Sparrow in Vermont is projected to fall about 100% by 2019 — from 0.06 in 2014 to a central estimate of 0.00 (95% range 0.00–0.42). A 5-year backtest shows a typical error of ±65.6%, with 100% of held-out values landing inside the 95% band.

-100%Change by 2019
0.00Projected 2019 index
0.00–0.4295% range
±65.6%Backtest error
19672019
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
20150.000.000.42
20160.000.000.42
20170.000.000.42
20180.000.000.42
20190.000.000.42

Vesper Sparrow Survey Routes in Vermont

Routes recording Vesper Sparrow in Vermont.
Fletcher719851969
Shaftsbury419671967
Grand Isle419871967
East Haven319921970
Gaysville219781978
Greensboro220001968
North Pownal119761967
S Reading119821970
Post Mills119811967
S Wallingfrd120141967
St Johnsbury119981970
Northfld Fls119801980
Middlesex119861969
Hardwick119921970
Waterville119801968
Hinesburg119881970
Colchester119981998
Bristol120122012

Vesper Sparrow Population Trend in Other States

arizonacaliforniacoloradoconnecticutdelawareidahoillinoisindianaiowakansaskentuckymainemarylandmassachusettsmichiganminnesotamissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniasouth-dakotatennesseetexasutahvirginiawashingtonwest-virginiawisconsinwyoming

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