BirdAnalyst
Species · BCR 9 · BBS 2025 Release · 1966–2024

White-headed Woodpecker In Great Basin

All regionsGreat BasinForest birds

White-headed Woodpecker in Great Basin has held roughly steady: down 2% on the route-weighted index since 1971.

-2%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 →
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 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 stay roughly flat through 2029, near 0.10 (95% range 0.00–0.19). A 5-year backtest shows a typical error of ±48.8%, 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 →
0.10Projected 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 →
0.00–0.1995% 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 →
±48.8%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 stay roughly flat through 2029, near 0.10 (95% range 0.00–0.19). A 5-year backtest shows a typical error of ±48.8%, 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 →
20250.090.000.19
20260.100.000.19
20270.100.000.19
20280.100.000.19
20290.100.000.19

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
HackamoreCALIFORNIA22010
Modoc PointOREGON22010
Camp ShermanOREGON21994
Picture FlatOREGON22014
LakeviewOREGON22023
AsotinWASHINGTON21971
LeavenworthWASHINGTON22023
L. WenatcheeWASHINGTON22024
NubieberCALIFORNIA12004
LikelyCALIFORNIA11976
Crowley LakeCALIFORNIA12022
Davis CreekCALIFORNIA12008
MacdoelCALIFORNIA12019
Clear Lk ResCALIFORNIA12016
Crowder FlatCALIFORNIA12019
MadelineCALIFORNIA12023
Fall River MillsCALIFORNIA12006
Medicine Mtn.CALIFORNIA12021
Dell SpringOREGON11978
Barnes ValOREGON11974
Davis LakeOREGON12024
Modoc Point 2OREGON12024
Lapham Res.OREGON12024

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