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Species · Utah · BBS 2025 Release · 1966–2024

Hairy Woodpecker Population Trend in Utah

All statesForest birds

Hairy Woodpecker in Utah has edged down: down 24% on the route-weighted index since 1970.

-24%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 →
45YearsYears 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 38% by 2029 — from 0.56 in 2024 to a central estimate of 0.34 (95% range 0.00–0.69). A 5-year backtest shows a typical error of ±26.1%, with 100% of held-out values landing inside the 95% band.

-38%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 →
0.34Projected 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 →
±26.1%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 38% by 2029 — from 0.56 in 2024 to a central estimate of 0.34 (95% range 0.00–0.69). A 5-year backtest shows a typical error of ±26.1%, 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 →
20250.350.000.69
20260.350.000.69
20270.340.000.69
20280.340.000.69
20290.340.000.69

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 2620242021
Heber Mtn.620241996
La Sal 3520242007
Red Spur Mtn.420231997
La Sal420001996
Soapstone320241992
Ferron320212001
Hyrum219771977
La Sal 2220062004
Logan Canyon220191997
Woodruff220212004
Navajo Lake220241968
Boulder220191989
Fayette219931993
Hatch220221994
Wasatch Nf220241991
Fish Lake Nf220241992
Moon Lake 2120162016
Beck119871976
Book Ridge120242024
Grizzly Rdge120241992
Lost Cr. Res120181995
Oak City120072007
Saleratus Cr120001996
Willow Creek120242024

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 2026-05-22.