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Species · Massachusetts · BBS 2025 Release · 1966–2024

Spotted Sandpiper Population Trend in Massachusetts

All statesShorebirds

Spotted Sandpiper in Massachusetts has increased: up 37% on the route-weighted index since 1969.

+37%Since 1969TrendPercent 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 →
13Routes 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 →
22YearsYears 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 MassachusettsNotable 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 Spotted Sandpiper in Massachusetts. See the full index history below.

Spotted Sandpiper Population Forecast in Massachusetts

If the recent trend holds, Spotted Sandpiper in Massachusetts is projected to rise about 61% by 2029 — from 0.07 in 2024 to a central estimate of 0.11 (95% range 0.02–0.20). A 5-year backtest shows a typical error of ±86%, with 100% of held-out values landing inside the 95% band.

+61%Change by 2029TrendPercent 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 →
0.11Projected 2029 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.02–0.2095% 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 →
±86%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 Massachusetts is projected to rise about 61% by 2029 — from 0.07 in 2024 to a central estimate of 0.11 (95% range 0.02–0.20). A 5-year backtest shows a typical error of ±86%, with 100% of held-out values landing inside the 95% band.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 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 →
20250.110.010.20
20260.110.010.20
20270.110.010.20
20280.110.020.20
20290.110.020.20

Spotted Sandpiper Survey Routes in Massachusetts

Routes recording Spotted Sandpiper in Massachusetts.
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 →
Marion120241995
Prattville120192000
Newburyport119741974
Littleton119981967
N Oxford119791979
Mansfield119951970
E Pepperell119881988
Belchertown119851968
Holden120212009
N. Andover119951995
Cummington119871987
Chesterfield120131969
Cummington 2120162016

Spotted Sandpiper Population Trend in Other States

alabamaalaskaarizonacaliforniacoloradoconnecticutdelawaregeorgiaidahoillinoisindianaiowakansaskentuckymainemarylandmichiganminnesotamissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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