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Species · Arkansas · BBS 2025 Release · 1966–2024

Hairy Woodpecker Population Trend in Arkansas

All statesForest birds

Hairy Woodpecker in Arkansas has increased: up 41% on the route-weighted index since 1969.

+41%Since 1969TrendPercent 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 →
55Routes 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 →
56YearsYears 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 ArkansasNotable 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 Arkansas. See the full index history below.

Hairy Woodpecker Population Forecast in Arkansas

If the recent trend holds, Hairy Woodpecker in Arkansas is projected to rise about 19% by 2029 — from 0.36 in 2024 to a central estimate of 0.43 (95% range 0.18–0.68). A 5-year backtest shows a typical error of ±18.6%, with 100% of held-out values landing inside the 95% band.

+19%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 →
0.43Projected 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 →
0.18–0.6895% 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 →
±18.6%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 Arkansas is projected to rise about 19% by 2029 — from 0.36 in 2024 to a central estimate of 0.43 (95% range 0.18–0.68). A 5-year backtest shows a typical error of ±18.6%, with 100% of held-out values landing inside the 95% band.19672029
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 →
20250.410.160.66
20260.420.170.67
20270.420.170.67
20280.420.170.67
20290.430.180.68

Hairy Woodpecker Survey Routes in Arkansas

Routes recording Hairy Woodpecker in Arkansas.
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 →
Ramsey219961971
Hope220031967
Massard220072007
Ravenden Springs220152010
Sims220232010
Four Lakes219971995
Crowley'S Ridge220242011
Princeton220141999
Dry Fork220232002
Old Milo120061967
Eudora120091987
Locust Bayou120171972
Stamps120191978
Ashdown119981976
Hughes120221969
West Tyler119841970
South Bend120171971
Crows119901972
Poyen120001971
Hollywood120151967
Blakely119961969
Waldron120241967
Harrisburg119761967
Whitton119911990
Augusta119991969

Hairy Woodpecker Population Trend in Other States

alabamaalaskaarizonacaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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