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

Pine Warbler Population Trend in Vermont

All statesForest birds

Pine Warbler in Vermont has surged: up 22× on the route-weighted index since 1969.

22×Since 1969
21Routes In State
48Years

Notable Pine Warbler Trends in Vermont

long arc increasecomputed index

Pine Warbler has surged in Vermont: up 22× on the route-weighted index since 1969.

Pine Warbler Population Forecast in Vermont

If the recent trend holds, Pine Warbler in Vermont is projected to fall about 47% by 2029 — from 2.4 in 2024 to a central estimate of 1.3 (95% range 0.37–2.2). A 5-year backtest shows a typical error of ±64.7%, with 0% of held-out values landing inside the 95% band.

-47%Change by 2029
1.3Projected 2029 index
0.37–2.295% range
±64.7%Backtest error
19672029
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
20251.20.272.1
20261.20.292.1
20271.20.322.1
20281.30.342.2
20291.30.372.2

Pine Warbler Survey Routes in Vermont

Routes recording Pine Warbler in Vermont.
Marlboro1820242014
Middlesex620241999
East Haven520161968
Stratton420242006
Fletcher420241985
S Reading320231968
Post Mills320241967
Hardwick320241981
Gaysville220192001
East Calais220241981
Stowe220232023
Bristol220162016
North Pownal120231974
Landgrove120222022
Shaftsbury120221991
S Wallingfrd119741974
W Rutland120242018
St Johnsbury120241992
Greensboro120242008
Colchester120231986
Newbury 2120222008

Pine Warbler Population Trend in Other States

alabamaarkansasconnecticutdelawarefloridageorgiaillinoisindianakentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourinew-hampshirenew-jerseynew-yorknorth-carolinaohiooklahomapennsylvaniarhode-islandsouth-carolinatennesseetexasvirginiawest-virginiawisconsin

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