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

Wilson's Snipe Population Trend in Idaho

All statesShorebirds

Wilson's Snipe in Idaho has fallen sharply: down 69% on the route-weighted index since 1970.

-69%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 →
54Routes 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 IdahoNotable 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 declinecomputed 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 fallen sharply in Idaho: down 69% on the route-weighted index since 1970.

Wilson's Snipe Population Forecast in Idaho

If the recent trend holds, Wilson's Snipe in Idaho is projected to fall about 28% by 2030 — from 1.3 in 2025 to a central estimate of 0.97 (95% range 0.00–3.5). A 5-year backtest shows a typical error of ±32.7%, with 100% of held-out values landing inside the 95% band.

-28%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 →
0.97Projected 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 →
0.00–3.595% 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 →
±32.7%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 Idaho is projected to fall about 28% by 2030 — from 1.3 in 2025 to a central estimate of 0.97 (95% range 0.00–3.5). A 5-year backtest shows a typical error of ±32.7%, 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 →
20261.30.003.9
20271.30.003.8
20281.20.003.7
20291.10.003.6
20300.970.003.5

Wilson's Snipe Survey Routes in Idaho

Routes recording Wilson's Snipe in Idaho.
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 →
Cascade3519841968
Baker2020241974
Nezperce Nf1619991992
Centerville1420251974
Picabo1420171988
Iron Springs1120241988
Cape Horn1020251972
Naples920251972
Sawtooth City 2720252015
Almo720191988
Golden520161987
Challis520251975
Triangle520211986
Grangeville419861986
Leadore420241974
Sawtooth Cty420141988
Dougal Res320241988
Preston320231988
Cabarton320241985
Blackft Res220181984
Mivoden220091977
Alturas219871986
Glenns Ferry219861968
Acequia220041979
Henry219831973

Wilson's Snipe Population Trend in Other States

alaskaarizonacaliforniacoloradoillinoisiowamainemassachusettsmichiganminnesotamontananebraskanevadanew-hampshirenew-mexiconew-yorknorth-dakotaohiooregonpennsylvaniasouth-dakotautahvermontwashingtonwisconsinwyoming

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