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

Spotted Sandpiper Population Trend in Vermont

All statesShorebirds

Spotted Sandpiper in Vermont has fallen sharply: down 62% on the route-weighted index since 1968.

-62%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 →
20Routes 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 →
49YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Spotted Sandpiper 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 →

long arc declinecomputed indexTrend sourceWhether the figure is our own computed route-weighted index or an official USGS modeled estimate. The current build labels every trend as computed.Full methodology →

Spotted Sandpiper has fallen sharply in Vermont: down 62% on the route-weighted index since 1968.

Spotted Sandpiper Population Forecast in Vermont

If the recent trend holds, Spotted Sandpiper in Vermont is projected to fall about 60% by 2027 — from 0.16 in 2022 to a central estimate of 0.06 (95% range 0.00–0.32). A 5-year backtest shows a typical error of ±21.6%, with 100% of held-out values landing inside the 95% band.

-60%Change by 2027TrendPercent 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 →
0.06Projected 2027 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.00–0.3295% 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 →
±21.6%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, Spotted Sandpiper in Vermont is projected to fall about 60% by 2027 — from 0.16 in 2022 to a central estimate of 0.06 (95% range 0.00–0.32). A 5-year backtest shows a typical error of ±21.6%, with 100% of held-out values landing inside the 95% band.19662027
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 →
20230.090.000.34
20240.080.000.34
20250.070.000.33
20260.070.000.32
20270.060.000.32

Spotted Sandpiper Survey Routes in Vermont

Routes recording Spotted Sandpiper 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 →
Gaysville220131967
Greensboro220221975
Grand Isle220121967
North Pownal119841984
Landgrove119901972
S Reading120081994
Post Mills120041976
Shaftsbury120221966
W Rutland120031966
St Johnsbury120151972
East Haven119901983
Northfld Fls119881988
Middlesex120151972
East Calais119831970
Hardwick119791966
Fletcher120141970
Waterville119801968
Hinesburg119891966
Colchester120142006
Stowe120071988

Spotted Sandpiper Population Trend in Other States

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

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