BirdAnalyst
Species · South Dakota · BBS 2026 Release · 1966–2025

Upland Sandpiper Population Trend in South Dakota

All statesGrassland birds

Upland Sandpiper in South Dakota has increased: up 48% on the route-weighted index since 1969.

+48%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 →
55Routes 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 →
58YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Upland Sandpiper Trends in South DakotaNotable 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 Upland Sandpiper in South Dakota. See the full index history below.

Upland Sandpiper Population Forecast in South Dakota

If the recent trend holds, Upland Sandpiper in South Dakota is projected to stay roughly flat through 2030, near 14 (95% range 7.9–20). A 5-year backtest shows a typical error of ±14.3%, with 100% of held-out values landing inside the 95% band.

-8%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 →
14Projected 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 →
7.9–2095% 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 →
±14.3%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, Upland Sandpiper in South Dakota is projected to stay roughly flat through 2030, near 14 (95% range 7.9–20). A 5-year backtest shows a typical error of ±14.3%, with 100% of held-out values landing inside the 95% band.19672030
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 →
2026147.820
2027147.920
2028147.920
2029147.920
2030147.920

Upland Sandpiper Survey Routes in South Dakota

Routes recording Upland Sandpiper in South Dakota.
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 →
Ottumwa6820251967
Cedar Pass5820251967
Harding5620251969
Lacreek5220251991
Hayes5120241989
Long Lake4820191967
White Lake4420111967
Laplant4020151971
Isabel4020151990
Maurine3720251969
Conde3419841967
Gettysburg3320231969
Crow Creek3220231967
Owanka3020221967
Eagle Butte2820151990
Ft Thompson2620111967
Railroad Butte2620221995
Rosebud2520111967
Volunteer2320251967
Fort Pierre2120251968
Winner2020251968
Marcus2020151999
Tripp1920251967
Promise1720151971
Ardmore1720191977

Upland Sandpiper Population Trend in Other States

alaskacoloradoillinoisindianaiowakansasmainemarylandmassachusettsmichiganminnesotamissourimontananebraskanew-hampshirenew-jerseynew-yorknorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandtexasvermontvirginiawest-virginiawisconsinwyoming

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