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

Ring-necked Duck Population Trend in Wyoming

All statesWaterfowl

Ring-necked Duck in Wyoming has increased: up 34% on the route-weighted index since 1985.

+34%Since 1985TrendPercent 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 →
18Routes 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 →
40YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Ring-necked Duck Trends in WyomingNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →

No notable trend signals for Ring-necked Duck in Wyoming. See the full index history below.

Ring-necked Duck Population Forecast in Wyoming

If the recent trend holds, Ring-necked Duck in Wyoming is projected to rise about 28% by 2029 — from 0.17 in 2024 to a central estimate of 0.22 (95% range 0.00–0.45). A 5-year backtest shows a typical error of ±302.9%, with 80% of held-out values landing inside the 95% band.

+28%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 →
0.22Projected 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 →
0.00–0.4595% 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 →
±302.9%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, Ring-necked Duck in Wyoming is projected to rise about 28% by 2029 — from 0.17 in 2024 to a central estimate of 0.22 (95% range 0.00–0.45). A 5-year backtest shows a typical error of ±302.9%, with 80% of held-out values landing inside the 95% band.19702029
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 →
20250.210.000.44
20260.210.000.44
20270.210.000.44
20280.210.000.45
20290.220.000.45

Ring-necked Duck Survey Routes in Wyoming

Routes recording Ring-necked Duck in Wyoming.
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 →
Seedskadee720232023
Nowood620242024
Tensleep420092009
Boulder420162009
Mammoth420241982
Hunter Peak220241992
Ne Entrance220141998
Horse Creek220171999
Savery 2220092009
Moose120161989
Carter 2120242024
Yellowstone120221987
Colter Bay119701970
Seedskadee 2120242024
Crazy Woman120241987
Fiddler Lk120231988
Rock River119991999
Bucknum119941994

Ring-necked Duck Population Trend in Other States

alabamaalaskaarizonacaliforniacoloradoidahoiowamainemichiganminnesotamontananebraskanevadanew-hampshirenew-yorknorth-dakotaohiooregonsouth-dakotautahvermontwashingtonwisconsin

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