BirdAnalyst
Species · BCR 9 · BBS 2025 Release · 1966–2024

Spotted Sandpiper In Great Basin

All regionsGreat BasinShorebirds

Spotted Sandpiper in Great Basin has edged down: down 23% on the route-weighted index since 1970.

-23%Since 1970TrendPercent 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 →
153Routes 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 →
56YearsYears 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 Great Basin. See the full index history below.

Spotted Sandpiper In Great Basin Population Forecast

If the recent trend holds, Spotted Sandpiper in Great Basin is projected to rise about 13% by 2029 — from 0.36 in 2024 to a central estimate of 0.41 (95% range 0.20–0.61). A 5-year backtest shows a typical error of ±17.3%, with 100% of held-out values landing inside the 95% band.

+13%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 →
0.41Projected 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 →
0.20–0.6195% 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 →
±17.3%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, Spotted Sandpiper in Great Basin is projected to rise about 13% by 2029 — from 0.36 in 2024 to a central estimate of 0.41 (95% range 0.20–0.61). A 5-year backtest shows a typical error of ±17.3%, with 100% of held-out values landing inside the 95% band.19682029
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 →
20250.410.200.62
20260.410.200.62
20270.410.200.62
20280.410.200.62
20290.410.200.61

Routes In Great Basin

Routes recording Spotted Sandpiper in Great Basin.
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 →
HenryIDAHO211981
NighthawkWASHINGTON82024
UmatillaOREGON72023
WapatoWASHINGTON72022
KendallWASHINGTON72024
Barnes ValOREGON41987
HyrumUTAH41975
TwispWASHINGTON42024
DorrisCALIFORNIA32019
Iron GateCALIFORNIA32019
TriangleIDAHO32015
Cedar HillIDAHO32021
Daniels ResIDAHO31997
Tractor FlatIDAHO32019
Dobbin CreekNEVADA31982
LeamingtonUTAH31992
RimrockWASHINGTON32024
ConcreteWASHINGTON32024
Scootney ReservoirWASHINGTON32024
RavendaleCALIFORNIA22002
Clear Lk ResCALIFORNIA22017
BartleCALIFORNIA21995
HackamoreCALIFORNIA22010
GiffordIDAHO22015
BakerIDAHO22024

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