BirdAnalyst
Species · Vermont · BBS 2026 Release · 1966–2025

Rock Pigeon Population Trend in Vermont

All statesGeneralists

Rock Pigeon in Vermont has edged up: up 12% on the route-weighted index since 1968.

+12%Since 1968TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →
26Routes In StateSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
59YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Rock Pigeon Trends in VermontNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →

No notable trend signals for Rock Pigeon in Vermont. See the full index history below.

Rock Pigeon Population Forecast in Vermont

If the recent trend holds, Rock Pigeon in Vermont is projected to stay roughly flat through 2030, near 3.7 (95% range 0.00–9.3). A 5-year backtest shows a typical error of ±20.5%, with 100% of held-out values landing inside the 95% band.

-4%Change by 2030TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →
3.7Projected 2030 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.00–9.395% range95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
±20.5%Backtest errorBacktest errorTypical error when we hold out the most recent years, forecast them, and compare to what actually happened. Lower means a more trustworthy projection.Full methodology →
If the recent trend holds, Rock Pigeon in Vermont is projected to stay roughly flat through 2030, near 3.7 (95% range 0.00–9.3). A 5-year backtest shows a typical error of ±20.5%, with 100% of held-out values landing inside the 95% band.19662030
Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.
YearProjected indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →95% low95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →95% high95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
20263.90.009.6
20273.90.009.5
20283.80.009.5
20293.70.009.4
20303.70.009.3

Rock Pigeon Survey Routes in Vermont

Routes recording Rock Pigeon in Vermont.
Recent countThe raw number of individuals recorded on this route in its most recent survey year. A single-route tally, not a trend.Full methodology →
Hinesburg4619941970
Gaysville2920251966
Post Mills1820251976
Grand Isle1820231967
Bristol1320251995
Newbury720031986
Waterville719801973
S Reading420241966
Marlboro319911986
Fletcher320251969
Landgrove219891975
Shaftsbury220251966
S Wallingfrd220211967
W Rutland220231966
St Johnsbury220131986
East Calais220221968
Stowe220231988
North Pownal120251966
Stratton120252018
East Haven120251967
Northfld Fls120211980
Middlesex120251980
Hardwick120241974
Greensboro120221967
Colchester120231986

Rock Pigeon Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvirginiawashingtonwest-virginiawisconsinwyoming

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14.