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

Bobolink Population Trend in Vermont

All statesGrassland birds

Bobolink in Vermont has collapsed: down 78% on the route-weighted index since 1968.

-78%Since 1968
26Routes In State
58Years

Notable Bobolink Trends in Vermont

long arc declinecomputed index

Bobolink has collapsed in Vermont: down 78% on the route-weighted index since 1968.

Bobolink Population Forecast in Vermont

If the recent trend holds, Bobolink in Vermont is projected to fall about 100% by 2029 — from 4.3 in 2024 to a central estimate of 0.00 (95% range 0.00–5.5). A 5-year backtest shows a typical error of ±83.9%, with 80% of held-out values landing inside the 95% band.

-100%Change by 2029
0.00Projected 2029 index
0.00–5.595% range
±83.9%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
20250.850.006.3
20260.510.006.0
20270.170.005.6
20280.000.005.5
20290.000.005.5

Bobolink Survey Routes in Vermont

Routes recording Bobolink in Vermont.
East Haven1520241966
Waterville1519801967
Stratton920241969
Gaysville920181966
North Pownal820241966
Greensboro820241967
Hinesburg819941966
Grand Isle820231967
Landgrove720241966
Bristol720181995
S Reading520241966
Middlesex420241968
Colchester420241986
Newbury 2420232005
Post Mills320241966
St Johnsbury320241970
Hardwick320241966
Stowe320241988
Shaftsbury220221966
W Rutland220241966
Northfld Fls220211980
Newbury220041986
Marlboro120241966
S Wallingfrd120211966
East Calais120241966

Bobolink Population Trend in Other States

californiacoloradoconnecticutidahoillinoisindianaiowakansaskentuckymainemarylandmassachusettsmichiganminnesotamissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooregonpennsylvaniarhode-islandsouth-dakotautahvirginiawashingtonwest-virginiawisconsinwyoming

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