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Species · Michigan · BBS 2025 Release · 1966–2024

Upland Sandpiper Population Trend in Michigan

All statesGrassland birds

Upland Sandpiper in Michigan has fallen sharply: down 64% on the route-weighted index since 1968.

-64%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 →
56Routes 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 MichiganNotable 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 fallen sharply in Michigan: down 63% on the route-weighted index since 1968.

Upland Sandpiper Population Forecast in Michigan

If the recent trend holds, Upland Sandpiper in Michigan is projected to stay roughly flat through 2029, near 0.11 (95% range 0.00–0.49). A 5-year backtest shows a typical error of ±311.9%, with 100% of held-out values landing inside the 95% band.

+4%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 →
0.00–0.4995% 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 →
±311.9%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 Michigan is projected to stay roughly flat through 2029, near 0.11 (95% range 0.00–0.49). A 5-year backtest shows a typical error of ±311.9%, 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 →
20250.140.000.52
20260.130.000.51
20270.130.000.51
20280.120.000.50
20290.110.000.49

Upland Sandpiper Survey Routes in Michigan

Routes recording Upland Sandpiper in Michigan.
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 →
Walloon Lake 2520242005
Irons419861970
Skegemog Pt420141974
Hungerford320231991
Herman319931990
Wilson320021966
Gilchrist319951974
Pleasant Valley 2320232004
Allegan Wma220171993
Cunard220211973
Big Blue Lk220031979
Herron220162011
Howardsville219891970
Rochester220052005
Pickford220171973
Tyre219881982
Mayfield220182000
Cluster Lakes220102007
Harrietta120091991
Ontonagon120162004
Bootjack119961967
Chippewa Lk.119961996
Shingleton119861967
Isabella119851972
Bear Lake120161971

Upland Sandpiper Population Trend in Other States

alaskacoloradoillinoisindianaiowakansasmainemarylandmassachusettsminnesotamissourimontananebraskanew-hampshirenew-jerseynew-yorknorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-dakotatexasvermontvirginiawest-virginiawisconsinwyoming

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