BirdAnalyst
Species · Colorado · BBS 2026 Release · 1966–2025

Wilson's Snipe Population Trend in Colorado

All statesShorebirds

Wilson's Snipe in Colorado has risen sharply: up 68% on the route-weighted index since 1970.

+68%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 →
100Routes 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 →
57YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Wilson's Snipe Trends in ColoradoNotable 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 increasecomputed 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 →

Wilson's Snipe has risen sharply in Colorado: up 68% on the route-weighted index since 1970.

Wilson's Snipe Population Forecast in Colorado

If the recent trend holds, Wilson's Snipe in Colorado is projected to rise about 34% by 2030 — from 1.4 in 2025 to a central estimate of 1.9 (95% range 0.00–4.0). A 5-year backtest shows a typical error of ±43.9%, with 100% of held-out values landing inside the 95% band.

+34%Change by 2030TrendPercent 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 →
1.9Projected 2030 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.00–4.095% 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 →
±43.9%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, Wilson's Snipe in Colorado is projected to rise about 34% by 2030 — from 1.4 in 2025 to a central estimate of 1.9 (95% range 0.00–4.0). A 5-year backtest shows a typical error of ±43.9%, with 100% of held-out values landing inside the 95% band.19682030
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 →
20262.00.004.1
20272.00.004.1
20281.90.004.1
20291.90.004.0
20301.90.004.0

Wilson's Snipe Survey Routes in Colorado

Routes recording Wilson's Snipe in Colorado.
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 →
Walden3420251990
Castleton2320251988
Yampa1120231971
Lay1020251996
Doyleville920251988
Buford820251970
Paonia820251992
Powderhorn720252000
Heeney 2620252025
Tincup520251992
Parlin420251968
Alamosa420251988
San Luis419991991
Heeney420192018
Stillwater Pass 2420252010
Maybell320251970
Dolores319871969
Falfa320251972
Lost Lake320251994
Browns Park320241993
Buffalo Park320231992
Neegrande319981992
Fox Creek320252008
Ragged Mtn.320121996
Piceance Basin320041998

Wilson's Snipe Population Trend in Other States

alaskaarizonacaliforniaidahoillinoisiowamainemassachusettsmichiganminnesotamontananebraskanevadanew-hampshirenew-mexiconew-yorknorth-dakotaohiooregonpennsylvaniasouth-dakotautahvermontwashingtonwisconsinwyoming

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14.