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

Red-headed Woodpecker Population Trend in Colorado

All statesForest birds

Red-headed Woodpecker in Colorado has declined: down 47% on the route-weighted index since 1973.

-47%Since 1973TrendPercent 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 →
26Routes 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 →
51YearsYears 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-headed Woodpecker Trends in ColoradoNotable 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-headed Woodpecker in Colorado. See the full index history below.

Red-headed Woodpecker Population Forecast in Colorado

If the recent trend holds, Red-headed Woodpecker in Colorado is projected to stay roughly flat through 2029, near 0.03 (95% range 0.00–0.15). A 5-year backtest shows a typical error of ±55.5%, with 100% of held-out values landing inside the 95% band.

n/aChange 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 →
0.03Projected 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 →
0.00–0.1595% 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 →
±55.5%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-headed Woodpecker in Colorado is projected to stay roughly flat through 2029, near 0.03 (95% range 0.00–0.15). A 5-year backtest shows a typical error of ±55.5%, 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 →
20250.040.000.15
20260.040.000.15
20270.040.000.15
20280.040.000.15
20290.030.000.15

Red-headed Woodpecker Survey Routes in Colorado

Routes recording Red-headed Woodpecker in Colorado.
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 →
Pinneo220091973
Abarr220241969
Doyle Bridge 2220231998
Julesburg220211998
Grover220212010
Kirk220232022
Harmony119831975
Fleming120062006
Kiowa120161980
Last Chance119791979
Boyero120161982
Lamar120011974
Two Buttes119841979
Wildhorse L120241990
Gordon Creek119961996
Bethune120191993
Comanche Pk120232023
Nunn120092009
Fort Morgan120211996
Burlington120212008
Timpas120061997
Amherst120232000
Prospect Val120002000
Doyle Bridge119931993
Neegrande120191992

Red-headed Woodpecker Population Trend in Other States

alabamaarkansasconnecticutdelawarefloridageorgiaillinoisindianaiowakansaskentuckylouisianamarylandmichiganminnesotamississippimissourimontananebraskanew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomapennsylvaniasouth-carolinasouth-dakotatennesseetexasvermontvirginiawest-virginiawisconsinwyoming

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