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

Spotted Sandpiper Population Trend in Indiana

All statesShorebirds

Spotted Sandpiper in Indiana has fallen sharply: down 56% on the route-weighted index since 1970.

-56%Since 1970TrendPercent 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 →
30Routes 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 →
45YearsYears 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 IndianaNotable 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 Indiana: down 56% on the route-weighted index since 1970.

Spotted Sandpiper Population Forecast in Indiana

If the recent trend holds, Spotted Sandpiper in Indiana is projected to stay roughly flat through 2029, near 0.05 (95% range 0.00–0.17). A 5-year backtest shows a typical error of ±64.1%, with 80% of held-out values landing inside the 95% band.

n/aChange 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 →
0.05Projected 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 →
0.00–0.1795% 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 →
±64.1%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 Indiana is projected to stay roughly flat through 2029, near 0.05 (95% range 0.00–0.17). A 5-year backtest shows a typical error of ±64.1%, with 80% of held-out values landing inside the 95% band.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 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 →
20250.060.000.18
20260.060.000.17
20270.060.000.17
20280.050.000.17
20290.050.000.17

Spotted Sandpiper Survey Routes in Indiana

Routes recording Spotted Sandpiper in Indiana.
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 →
Hebron320211970
Cuba320192019
Knox220191996
Kankakee Sands220082000
Gary119991980
South Bend119781978
Kewanna120211981
Middlebury120192016
Columbia Cty120212021
Packertown119931968
Ellis119981966
Fowler120191978
W Lafayette120211990
Monticello120011991
Thorntown120052005
Middletown120082008
Muncie119891989
Wabash120232008
Berne119811981
Pimento120232023
Brookville120241997
Cumback119841984
Millersburg120032003
Corydon119891989
Vevay119951995

Spotted Sandpiper Population Trend in Other States

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

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