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Species · BCR 19 · BBS 2025 Release · 1966–2024

Spotted Sandpiper In Central Mixed Grass Prairie

All regionsCentral Mixed Grass PrairieShorebirds

Spotted Sandpiper in Central Mixed Grass Prairie has surged: up 114% on the route-weighted index since 1973.

+114%Since 1973TrendPercent 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 →
18Routes In RegionSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
35YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable SignalsNotable 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 Spotted Sandpiper in Central Mixed Grass Prairie. See the full index history below.

Spotted Sandpiper In Central Mixed Grass Prairie Population Forecast

If the recent trend holds, Spotted Sandpiper in Central Mixed Grass Prairie is projected to fall about 52% by 2029 — from 0.07 in 2024 to a central estimate of 0.04 (95% range 0.00–0.10). A 5-year backtest shows a typical error of ±70.9%, with 100% of held-out values landing inside the 95% band.

-52%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 →
0.04Projected 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 →
0.00–0.1095% 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 →
±70.9%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, Spotted Sandpiper in Central Mixed Grass Prairie is projected to fall about 52% by 2029 — from 0.07 in 2024 to a central estimate of 0.04 (95% range 0.00–0.10). A 5-year backtest shows a typical error of ±70.9%, with 100% of held-out values landing inside the 95% band.19692029
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 →
20250.040.000.10
20260.040.000.10
20270.040.000.10
20280.040.000.10
20290.040.000.10

Routes In Central Mixed Grass Prairie

Routes recording Spotted Sandpiper in Central Mixed Grass Prairie.
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 →
DouglasOKLAHOMA92009
SumnerNEBRASKA32024
AlbertKANSAS21990
StrattonNEBRASKA22016
WellingtonKANSAS12024
DaltonKANSAS12014
BerwetKANSAS12003
GoesselKANSAS12017
BelvidereNEBRASKA12010
KenesawNEBRASKA12001
KearneyNEBRASKA12019
HolbrookNEBRASKA11969
SurpriseNEBRASKA12024
JohnstownNEBRASKA12019
GordonNEBRASKA12004
ArthurNEBRASKA12021
BrownleeNEBRASKA12008
MaxwellNEBRASKA12018

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