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Species · Maine · BBS 2025 Release · 1966–2024

Upland Sandpiper Population Trend in Maine

All statesGrassland birds

Upland Sandpiper in Maine has collapsed: down 96% on the route-weighted index since 1969.

-96%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 →
9Routes 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 →
32YearsYears 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 MaineNotable 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 Maine: down 96% on the route-weighted index since 1969.

Upland Sandpiper Population Forecast in Maine

If the recent trend holds, Upland Sandpiper in Maine is projected to stay roughly flat through 2016, near 0.02 (95% range 0.00–0.63). A 5-year backtest shows a typical error of ±379%, with 100% of held-out values landing inside the 95% band.

n/aChange by 2016TrendPercent 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 →
0.02Projected 2016 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.00–0.6395% 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 →
±379%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 Maine is projected to stay roughly flat through 2016, near 0.02 (95% range 0.00–0.63). A 5-year backtest shows a typical error of ±379%, with 100% of held-out values landing inside the 95% band.19662016
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 →
20120.060.000.67
20130.050.000.66
20140.040.000.65
20150.030.000.64
20160.020.000.63

Upland Sandpiper Survey Routes in Maine

Routes recording Upland Sandpiper in Maine.
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 →
East Troy219831983
Deblois219991966
Grnd Lk Strm119901990
Warren119861986
Washburn119951995
Boundary119961996
Ft Fairfield120051998
Eastbrook119871985
Hancock120112011

Upland Sandpiper Population Trend in Other States

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

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