BirdAnalyst
Species · BCR 10 · BBS 2025 Release · 1966–2024

Spotted Sandpiper In Northern Rockies

All regionsNorthern RockiesShorebirds

Spotted Sandpiper in Northern Rockies has declined: down 29% on the route-weighted index since 1970.

-29%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 →
178Routes 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 Northern Rockies. See the full index history below.

Spotted Sandpiper In Northern Rockies Population Forecast

If the recent trend holds, Spotted Sandpiper in Northern Rockies is projected to rise about 129% by 2029 — from 0.58 in 2024 to a central estimate of 1.3 (95% range 0.37–2.3). A 5-year backtest shows a typical error of ±117.6%, with 60% of held-out values landing inside the 95% band.

+129%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 →
1.3Projected 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 →
0.37–2.395% 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 →
±117.6%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 Northern Rockies is projected to rise about 129% by 2029 — from 0.58 in 2024 to a central estimate of 1.3 (95% range 0.37–2.3). A 5-year backtest shows a typical error of ±117.6%, with 60% 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 →
20251.30.382.3
20261.30.382.3
20271.30.382.3
20281.30.382.3
20291.30.372.3

Routes In Northern Rockies

Routes recording Spotted Sandpiper in Northern Rockies.
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 →
YellowstoneWYOMING202022
NezperceIDAHO192012
GoldenIDAHO172016
SpartaOREGON122001
Ne EntranceWYOMING102021
Nezperce NfIDAHO91999
N Fork Cda RIDAHO62019
AlpineWYOMING62024
ChallisIDAHO52024
Rochat DivdeIDAHO52019
PhilipsburgMONTANA52022
GraniteOREGON52022
DonnybrookOREGON51997
DesolationOREGON51999
CascadeIDAHO41984
CentervilleIDAHO42019
ArleeMONTANA42024
Painted RockMONTANA42022
Logan PassMONTANA42024
LogdellOREGON42022
Rock RiverWYOMING41993
Baldy MountainIDAHO32015
CobaltIDAHO32024
Yellow PineIDAHO32016
FeathervilleIDAHO32024

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