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

Wilson's Snipe Population Trend in Colorado

All statesShorebirds

Wilson's Snipe in Colorado has surged: up 87% on the route-weighted index since 1970.

+87%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 →
99Routes 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 →
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 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 surged in Colorado: up 87% 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 73% by 2029 — from 1.1 in 2024 to a central estimate of 2.0 (95% range 0.00–4.1). A 5-year backtest shows a typical error of ±47.8%, with 100% of held-out values landing inside the 95% band.

+73%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 →
2.0Projected 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 →
0.00–4.195% 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 →
±47.8%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 73% by 2029 — from 1.1 in 2024 to a central estimate of 2.0 (95% range 0.00–4.1). A 5-year backtest shows a typical error of ±47.8%, 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 →
20252.00.004.1
20262.00.004.1
20272.00.004.1
20282.00.004.1
20292.00.004.1

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 →
Walden1920241990
Castleton1220241988
Yampa1120231971
Buford1020241970
Doyleville920241988
Powderhorn820232000
Maybell720241970
Lay720241996
Owl Creek Pass620241998
Parlin520231968
Tincup520241992
Gribbles Prk520241995
Alamosa420241988
San Luis419991991
Paonia420241992
Steamboat L.420241996
Heeney420192018
Moffat320241971
Dolores319871969
Guffey320171992
Browns Park320241993
Buffalo Park320231992
Neegrande319981992
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 2026-05-22.