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

Warbling Vireo Population Trend in Vermont

All statesForest birds

Warbling Vireo in Vermont has surged: up 125% on the route-weighted index since 1968.

+125%Since 1968
26Routes In State
58Years

Notable Warbling Vireo Trends in Vermont

long arc increasecomputed index

Warbling Vireo has surged in Vermont: up 125% on the route-weighted index since 1968.

Warbling Vireo Population Forecast in Vermont

If the recent trend holds, Warbling Vireo in Vermont is projected to rise about 50% by 2029 — from 2.2 in 2024 to a central estimate of 3.3 (95% range 1.4–5.1). A 5-year backtest shows a typical error of ±42%, with 100% of held-out values landing inside the 95% band.

+50%Change by 2029
3.3Projected 2029 index
1.4–5.195% range
±42%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
20253.21.35.0
20263.21.45.0
20273.21.45.0
20283.21.45.1
20293.31.45.1

Warbling Vireo Survey Routes in Vermont

Routes recording Warbling Vireo in Vermont.
Hinesburg1319941966
Fletcher1220241969
W Rutland620241966
Shaftsbury520241966
S Wallingfrd520221966
Waterville519801967
Gaysville420211977
Grand Isle420241967
Bristol420181995
East Haven320241968
Newbury320041988
S Reading220241966
Post Mills220241966
St Johnsbury220181970
Middlesex220031968
Marlboro120181966
North Pownal120231978
Stratton120231968
Landgrove120241974
Northfld Fls120211980
East Calais120241974
Hardwick120241972
Greensboro120231973
Colchester120241986
Newbury 2120232005

Warbling Vireo Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutdelawareidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-dakotatennesseetexasutahvirginiawashingtonwest-virginiawisconsinwyoming

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