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

Hairy Woodpecker Population Trend in Wyoming

All statesForest birds

Hairy Woodpecker in Wyoming has held roughly steady: up 4% on the route-weighted index since 1974.

+4%Since 1974TrendPercent 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 →
48Routes 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 →
52YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Hairy Woodpecker 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 Hairy Woodpecker in Wyoming. See the full index history below.

Hairy Woodpecker Population Forecast in Wyoming

If the recent trend holds, Hairy Woodpecker in Wyoming is projected to rise about 55% by 2029 — from 0.16 in 2024 to a central estimate of 0.24 (95% range 0.02–0.47). A 5-year backtest shows a typical error of ±83%, with 100% of held-out values landing inside the 95% band.

+55%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 →
0.24Projected 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 →
0.02–0.4795% 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 →
±83%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, Hairy Woodpecker in Wyoming is projected to rise about 55% by 2029 — from 0.16 in 2024 to a central estimate of 0.24 (95% range 0.02–0.47). A 5-year backtest shows a typical error of ±83%, with 100% of held-out values landing inside the 95% band.19682029
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 →
20250.240.010.46
20260.240.010.47
20270.240.010.47
20280.240.020.47
20290.240.020.47

Hairy Woodpecker Survey Routes in Wyoming

Routes recording Hairy Woodpecker 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 →
Savery619951989
Hayden Val319851985
Crazy Woman320241979
Moran320162002
Ne Entrance220181990
Colter Bay219981968
Bald Mtn220221990
Moskee219981980
Colter Bay 2220242019
Buckskin Mtn220211980
Fletcher Pk220241982
Ryan Park220221993
Moskee 2220182003
Cody120102005
Basin119741974
Yellowstone120191988
Sundance120241975
Dubois120131977
Prior Flats120231991
Brookhurst119861972
Seely 2120192005
Buford120231993
Mammoth120141983
West Thumb119821982
Hunter Peak120241982

Hairy Woodpecker Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsin

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