BirdAnalyst
Species · BCR 9 · BBS 2026 Release · 1966–2025

White-headed Woodpecker In Great Basin

All regionsGreat BasinForest birds

White-headed Woodpecker in Great Basin has held roughly steady: up 6% on the route-weighted index since 1971.

+6%Since 1971TrendPercent 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 →
36Routes In RegionSurvey 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 SignalsNotable 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 White-headed Woodpecker in Great Basin. See the full index history below.

White-headed Woodpecker In Great Basin Population Forecast

If the recent trend holds, White-headed Woodpecker in Great Basin is projected to rise about 15% by 2030 — from 0.08 in 2025 to a central estimate of 0.10 (95% range 0.00–0.19). A 5-year backtest shows a typical error of ±50.7%, with 100% of held-out values landing inside the 95% band.

+15%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 →
0.10Projected 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 →
0.00–0.1995% 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 →
±50.7%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, White-headed Woodpecker in Great Basin is projected to rise about 15% by 2030 — from 0.08 in 2025 to a central estimate of 0.10 (95% range 0.00–0.19). A 5-year backtest shows a typical error of ±50.7%, with 100% of held-out values landing inside the 95% band.19692030
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 →
20260.090.000.19
20270.100.000.19
20280.100.000.19
20290.100.000.19
20300.100.000.19

Routes In Great Basin

Routes recording White-headed Woodpecker in Great Basin.
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 →
BartleCALIFORNIA82021
TionestaCALIFORNIA32021
Crowley LakeCALIFORNIA22025
HackamoreCALIFORNIA22010
Modoc PointOREGON22010
Camp ShermanOREGON21994
Lapham Res.OREGON22025
Bly 2OREGON22025
Picture FlatOREGON22014
SistersOREGON22025
LakeviewOREGON22023
AsotinWASHINGTON21971
LeavenworthWASHINGTON22023
EllensburgWASHINGTON22025
L. WenatcheeWASHINGTON22024
NubieberCALIFORNIA12004
LikelyCALIFORNIA11976
Davis CreekCALIFORNIA12008
MacdoelCALIFORNIA12019
Clear Lk ResCALIFORNIA12016
Crowder FlatCALIFORNIA12019
MadelineCALIFORNIA12023
Fall River MillsCALIFORNIA12006
Medicine Mtn.CALIFORNIA12021
Dell SpringOREGON11978

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