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Species · New Hampshire · BBS 2025 Release · 1966–2024

Wilson's Snipe Population Trend in New Hampshire

All statesShorebirds

Wilson's Snipe in New Hampshire has fallen sharply: down 55% on the route-weighted index since 1968.

-55%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 →
12Routes 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 New HampshireNotable 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 New Hampshire: down 55% on the route-weighted index since 1968.

Wilson's Snipe Population Forecast in New Hampshire

If the recent trend holds, Wilson's Snipe in New Hampshire is projected to rise about 29% by 2029 — from 0.18 in 2024 to a central estimate of 0.23 (95% range 0.00–0.69). A 5-year backtest shows a typical error of ±38.5%, with 100% of held-out values landing inside the 95% band.

+29%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 →
0.23Projected 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 →
0.00–0.6995% 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 →
±38.5%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 New Hampshire is projected to rise about 29% by 2029 — from 0.18 in 2024 to a central estimate of 0.23 (95% range 0.00–0.69). A 5-year backtest shows a typical error of ±38.5%, 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 →
20250.270.000.72
20260.260.000.71
20270.250.000.70
20280.240.000.69
20290.230.000.69

Wilson's Snipe Survey Routes in New Hampshire

Routes recording Wilson's Snipe in New Hampshire.
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 →
Dixvil Notch520171966
Hopkinton319701970
Clarksville320231966
Dixville Notch 2320242018
Brentwood119931993
Fitzwilliam119941970
Wilmot120131983
Jefferson Hl120221987
Franconia120221978
Milan120211966
Stratford120181966
Glen120241981

Wilson's Snipe Population Trend in Other States

alaskaarizonacaliforniacoloradoidahoillinoisiowamainemassachusettsmichiganminnesotamontananebraskanevadanew-mexiconew-yorknorth-dakotaohiooregonpennsylvaniasouth-dakotautahvermontwashingtonwisconsinwyoming

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