BirdAnalyst
Species · Colorado · BBS 2025 Release · 1966–2024

Spotted Sandpiper Population Trend in Colorado

All statesShorebirds

Spotted Sandpiper in Colorado has edged down: down 25% on the route-weighted index since 1970.

-25%Since 1970
96Routes In State
55Years

Notable Spotted Sandpiper Trends in Colorado

No notable trend signals for Spotted Sandpiper in Colorado. See the full index history below.

Spotted Sandpiper Population Forecast in Colorado

If the recent trend holds, Spotted Sandpiper in Colorado is projected to rise about 39% by 2029 — from 0.28 in 2024 to a central estimate of 0.39 (95% range 0.12–0.65). A 5-year backtest shows a typical error of ±59%, with 100% of held-out values landing inside the 95% band.

+39%Change by 2029
0.39Projected 2029 index
0.12–0.6595% range
±59%Backtest error
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 index95% low95% high
20250.390.120.65
20260.390.120.65
20270.390.120.65
20280.390.120.65
20290.390.120.65

Spotted Sandpiper Survey Routes in Colorado

Routes recording Spotted Sandpiper in Colorado.
Dolores Riv620241994
Tincup620241994
Pagosa Spgs419731969
Stillwater Pass420091999
Radium420131998
Stillwater Pass 2420242010
Fleming320062006
Guffey319901990
Lake City320031998
Fox Creek320241993
Marshall Pas320141995
Douglas Pass220231986
Blanca219861986
Willow Peak220181988
Cortez220071989
Deadman Rd.220162015
Kirk220232023
Cokedale219981998
Comanche Pk220002000
Baxter Pass220241995
Weston Pass220001994
Powderhorn220231995
Animas220001996
Piceance Basin220061998
Elbert220052005

Spotted Sandpiper Population Trend in Other States

alabamaalaskaarizonacaliforniaconnecticutdelawaregeorgiaidahoillinoisindianaiowakansaskentuckymainemarylandmassachusettsmichiganminnesotamissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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