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

Blackburnian Warbler Population Trend in Vermont

All statesForest birds

Blackburnian Warbler in Vermont has surged: up 400% on the route-weighted index since 1968.

+400%Since 1968
25Routes In State
58Years

Notable Blackburnian Warbler Trends in Vermont

long arc increasecomputed index

Blackburnian Warbler has surged in Vermont: up 400% on the route-weighted index since 1968.

Blackburnian Warbler Population Forecast in Vermont

If the recent trend holds, Blackburnian Warbler in Vermont is projected to stay roughly flat through 2029, near 3.0 (95% range 2.0–3.9). A 5-year backtest shows a typical error of ±16.7%, with 100% of held-out values landing inside the 95% band.

-1%Change by 2029
3.0Projected 2029 index
2.0–3.995% range
±16.7%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
20252.81.93.7
20262.81.93.7
20272.92.03.8
20282.92.03.8
20293.02.03.9

Blackburnian Warbler Survey Routes in Vermont

Routes recording Blackburnian Warbler in Vermont.
Stratton1020241967
East Calais920241966
East Haven820241966
Stowe720241988
Middlesex620241968
Marlboro520241967
Northfld Fls520211980
North Pownal420061984
Landgrove420241969
Post Mills220171967
St Johnsbury220221972
Hardwick220241966
Greensboro220241967
Waterville219801979
Newbury 2220232008
S Reading120141968
Gaysville120211967
Shaftsbury120241976
S Wallingfrd120212021
W Rutland120221996
Newbury120041986
Fletcher120221983
Hinesburg119891989
Colchester119901986
Grand Isle119931983

Blackburnian Warbler Population Trend in Other States

connecticutgeorgiaindianamainemarylandmassachusettsmichiganminnesotanew-hampshirenew-jerseynew-yorknorth-carolinaohiopennsylvaniarhode-islandtennesseevirginiawest-virginiawisconsin

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