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Species · Utah · BBS 2026 Release · 1966–2025

Hairy Woodpecker Population Trend in Utah

All statesForest birds

Hairy Woodpecker in Utah has declined: down 32% on the route-weighted index since 1970.

-32%Since 1970TrendPercent 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 →
46YearsYears 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 UtahNotable 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 Utah. See the full index history below.

Hairy Woodpecker Population Forecast in Utah

If the recent trend holds, Hairy Woodpecker in Utah is projected to fall about 25% by 2030 — from 0.47 in 2025 to a central estimate of 0.35 (95% range 0.01–0.69). A 5-year backtest shows a typical error of ±30.6%, with 100% of held-out values landing inside the 95% band.

-25%Change by 2030TrendPercent 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 →
0.35Projected 2030 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.01–0.6995% 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 →
±30.6%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, Hairy Woodpecker in Utah is projected to fall about 25% by 2030 — from 0.47 in 2025 to a central estimate of 0.35 (95% range 0.01–0.69). A 5-year backtest shows a typical error of ±30.6%, with 100% of held-out values landing inside the 95% band.19682030
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 →
20260.350.010.69
20270.350.010.69
20280.350.010.69
20290.350.010.69
20300.350.010.69

Hairy Woodpecker Survey Routes in Utah

Routes recording Hairy Woodpecker in Utah.
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 →
Alton 21120252021
Heber Mtn.620241996
Red Spur Mtn.420231997
La Sal420001996
La Sal 3420252007
Grizzly Rdge320251992
Ferron320212001
Hyrum219771977
La Sal 2220062004
Logan Canyon220191997
Woodruff220212004
Navajo Lake220251968
Boulder220191989
Fayette219931993
Beck 2220251996
Wasatch Nf220241991
Main Canyon220251987
Moon Lake 2120162016
Beck119871976
Book Ridge120242024
Lost Cr. Res120181995
Oak City120072007
Saleratus Cr120001996
Willow Creek120242024
Beaver120251971

Hairy Woodpecker Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasvermontvirginiawashingtonwest-virginiawisconsinwyoming

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14.