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Species · Wyoming · BBS 2025 Release · 1966–2024

Red-naped Sapsucker Population Trend in Wyoming

All statesForest birds

Red-naped Sapsucker in Wyoming has held roughly steady: up 7% on the route-weighted index since 1976.

+7%Since 1976TrendPercent 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 →
47Routes 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 →
50YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Red-naped Sapsucker 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 Red-naped Sapsucker in Wyoming. See the full index history below.

Red-naped Sapsucker Population Forecast in Wyoming

If the recent trend holds, Red-naped Sapsucker in Wyoming is projected to fall about 45% by 2029 — from 0.42 in 2024 to a central estimate of 0.23 (95% range 0.00–0.72). A 5-year backtest shows a typical error of ±36.6%, with 100% of held-out values landing inside the 95% band.

-45%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 →
0.00–0.7295% 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 →
±36.6%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, Red-naped Sapsucker in Wyoming is projected to fall about 45% by 2029 — from 0.42 in 2024 to a central estimate of 0.23 (95% range 0.00–0.72). A 5-year backtest shows a typical error of ±36.6%, with 100% of held-out values landing inside the 95% band.19692029
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 →
20250.250.000.74
20260.240.000.74
20270.240.000.73
20280.230.000.73
20290.230.000.72

Red-naped Sapsucker Survey Routes in Wyoming

Routes recording Red-naped Sapsucker 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 →
Buckskin Mtn720211981
Green River719821977
Savery 2620242008
Sundance520241976
Fox Park520241996
Sybille Cyn419801980
Alpine320241979
Boulder320072005
Rock Springs319821978
Ne Entrance220171992
Dubois220221976
Cumberland219821979
Mammoth220241983
Hunter Peak220241982
Horse Creek220241980
Crowheart220082008
Moran220162002
Mtn View220241980
Cody120111988
Prior Flats120222022
Colter Bay119981969
Fontenelle120081989
Ervay120242024
Brookhurst119911976
Savery119951989

Red-naped Sapsucker Population Trend in Other States

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