BirdAnalyst
Species · South Dakota · BBS 2025 Release · 1966–2024

Upland Sandpiper Population Trend in South Dakota

All statesGrassland birds

Upland Sandpiper in South Dakota has increased: up 40% on the route-weighted index since 1969.

+40%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 →
57YearsYears 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 rise about 18% by 2029 — from 12 in 2024 to a central estimate of 14 (95% range 7.8–20). A 5-year backtest shows a typical error of ±20.3%, with 100% of held-out values landing inside the 95% band.

+18%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 →
14Projected 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 →
7.8–2095% 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 →
±20.3%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 rise about 18% by 2029 — from 12 in 2024 to a central estimate of 14 (95% range 7.8–20). A 5-year backtest shows a typical error of ±20.3%, 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 →
2025147.720
2026147.720
2027147.720
2028147.720
2029147.820

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 →
Lacreek5820231991
Fort Pierre5220241968
Hayes5120241989
Long Lake4820191967
White Lake4420111967
Ottumwa4120221967
Laplant4020151971
Isabel4020151990
Cedar Pass3720231967
Conde3419841967
Gettysburg3320231969
Crow Creek3220231967
Owanka3020221967
Lodgepole2820241997
Eagle Butte2820151990
Ft Thompson2620111967
Railroad Butte2620221995
Rosebud2520111967
Volunteer2320191967
Maurine2320241969
Howard2220241970
Harding2220191969
Marcus2020151999
Promise1720151971
Ardmore1720191977

Upland Sandpiper Population Trend in Other States

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

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