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Species · Wisconsin · BBS 2025 Release · 1966–2024

Wilson's Snipe Population Trend in Wisconsin

All statesShorebirds

Wilson's Snipe in Wisconsin has fallen sharply: down 62% on the route-weighted index since 1968.

-62%Since 1968TrendPercent 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 →
76Routes 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 →
58YearsYears 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 WisconsinNotable 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 Wisconsin: down 62% on the route-weighted index since 1968.

Wilson's Snipe Population Forecast in Wisconsin

If the recent trend holds, Wilson's Snipe in Wisconsin is projected to fall about 83% by 2029 — from 0.25 in 2024 to a central estimate of 0.04 (95% range 0.00–0.55). A 5-year backtest shows a typical error of ±63.5%, with 100% of held-out values landing inside the 95% band.

-83%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 →
0.04Projected 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 →
0.00–0.5595% 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 →
±63.5%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 Wisconsin is projected to fall about 83% by 2029 — from 0.25 in 2024 to a central estimate of 0.04 (95% range 0.00–0.55). A 5-year backtest shows a typical error of ±63.5%, with 100% of held-out values landing inside the 95% band.19662029
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 →
20250.090.000.60
20260.080.000.59
20270.070.000.57
20280.060.000.56
20290.040.000.55

Wilson's Snipe Survey Routes in Wisconsin

Routes recording Wilson's Snipe in Wisconsin.
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 →
Rib Lake320191969
Omro 2320132003
Unity320241967
Clintonville319931974
Stetsonville320241990
Bashaw320152002
Montreal220241987
Gilman220241966
Holway219891967
Flambeau220241998
Saxeville219751975
Oconto Falls220051969
Omro219931966
Amnicon Falls220241999
Conover220232000
Pardeeville220131968
Fall River219841971
Buena Vista220192001
Mount Horeb219751975
Briggsville220192013
Cavour220192003
Chaffey120161966
Iron River120131977
Minong120191969
Grand View119961973

Wilson's Snipe Population Trend in Other States

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