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

Upland Sandpiper Population Trend in Wisconsin

All statesGrassland birds

Upland Sandpiper in Wisconsin has collapsed: down 96% on the route-weighted index since 1968.

-96%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 →
64Routes 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 WisconsinNotable 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 →

Upland Sandpiper has collapsed in Wisconsin: down 96% on the route-weighted index since 1968.

Upland Sandpiper Population Forecast in Wisconsin

If the recent trend holds, Upland Sandpiper in Wisconsin is projected to stay roughly flat through 2029, near 0.00 (95% range 0.00–0.32). A 5-year backtest shows a typical error of ±296.2%, with 100% 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 →
0.00Projected 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 →
0.00–0.3295% 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 →
±296.2%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 Wisconsin is projected to stay roughly flat through 2029, near 0.00 (95% range 0.00–0.32). A 5-year backtest shows a typical error of ±296.2%, with 100% 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 →
20250.000.000.32
20260.000.000.32
20270.000.000.32
20280.000.000.32
20290.000.000.32

Upland Sandpiper Survey Routes in Wisconsin

Routes recording Upland Sandpiper in Wisconsin.
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 →
Wausaukee320081980
Buena Vista320242000
Stratford320071966
Amnicon Falls320221998
Minong220171967
Holway219871967
Manawa219941966
Casco220191966
Newburg Crns219941966
Wiota220031967
Annaton220192000
Grimms220171998
Chaffey120161969
Iron River120171969
Grand View119951995
Bayfield119881967
Hudson120041967
Dresser119991999
Union Twp120101993
Loraine120001967
Cumberland120101967
Highland120002000
Exeland119771969
Gilman120062006
Phillips120031999

Upland Sandpiper Population Trend in Other States

alaskacoloradoillinoisindianaiowakansasmainemarylandmassachusettsmichiganminnesotamissourimontananebraskanew-hampshirenew-jerseynew-yorknorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-dakotatexasvermontvirginiawest-virginiawyoming

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