BirdAnalyst
Species · BCR 16 · BBS 2026 Release · 1966–2025

Wilson's Snipe In Southern Rockies / Colorado Plateau

All regionsSouthern Rockies / Colorado PlateauShorebirds

Wilson's Snipe in Southern Rockies / Colorado Plateau has surged: up 142% on the route-weighted index since 1970.

+142%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 →
129Routes 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 →
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 SignalsNotable 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 Southern Rockies / Colorado Plateau: up 142% on the route-weighted index since 1970.

Wilson's Snipe In Southern Rockies / Colorado Plateau Population Forecast

If the recent trend holds, Wilson's Snipe in Southern Rockies / Colorado Plateau is projected to rise about 44% by 2030 — from 1.1 in 2025 to a central estimate of 1.5 (95% range 0.00–3.3). A 5-year backtest shows a typical error of ±53.4%, with 100% of held-out values landing inside the 95% band.

+44%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 →
1.5Projected 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 →
0.00–3.395% 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 →
±53.4%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 Southern Rockies / Colorado Plateau is projected to rise about 44% by 2030 — from 1.1 in 2025 to a central estimate of 1.5 (95% range 0.00–3.3). A 5-year backtest shows a typical error of ±53.4%, 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 →
20261.60.003.3
20271.60.003.3
20281.60.003.3
20291.50.003.3
20301.50.003.3

Routes In Southern Rockies / Colorado Plateau

Routes recording Wilson's Snipe in Southern Rockies / Colorado Plateau.
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 →
WaldenCOLORADO342025
CastletonCOLORADO232025
YampaCOLORADO112023
DoylevilleCOLORADO92025
BufordCOLORADO82025
PaoniaCOLORADO82025
PowderhornCOLORADO72025
Fox ParkWYOMING72024
Heeney 2COLORADO62025
Uintah NfUTAH61994
TincupCOLORADO52025
WarbonnetWYOMING52019
ParlinCOLORADO42025
AlamosaCOLORADO42025
San LuisCOLORADO41999
HeeneyCOLORADO42019
Stillwater Pass 2COLORADO42025
WellingtonUTAH42001
BufordWYOMING42025
DoloresCOLORADO31987
FalfaCOLORADO32025
Lost LakeCOLORADO32025
Buffalo ParkCOLORADO32023
Fox CreekCOLORADO32025
Ragged Mtn.COLORADO32012

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