BirdAnalyst
Species · BCR 32 · BBS 2025 Release · 1966–2024

Pileated Woodpecker In Coastal California

All regionsCoastal CaliforniaForest birds

Pileated Woodpecker in Coastal California has held roughly steady: up 5% on the route-weighted index since 1971.

+5%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 →
17Routes 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 →
54YearsYears 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 Pileated Woodpecker in Coastal California. See the full index history below.

Pileated Woodpecker In Coastal California Population Forecast

If the recent trend holds, Pileated Woodpecker in Coastal California is projected to rise about 242% by 2029 — from 0.13 in 2024 to a central estimate of 0.44 (95% range 0.00–0.88). A 5-year backtest shows a typical error of ±517.4%, with 20% of held-out values landing inside the 95% band.

+242%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 →
0.44Projected 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 →
0.00–0.8895% 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 →
±517.4%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, Pileated Woodpecker in Coastal California is projected to rise about 242% by 2029 — from 0.13 in 2024 to a central estimate of 0.44 (95% range 0.00–0.88). A 5-year backtest shows a typical error of ±517.4%, with 20% 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 →
20250.410.000.85
20260.420.000.86
20270.430.000.86
20280.430.000.87
20290.440.000.88

Routes In Coastal California

Routes recording Pileated Woodpecker in Coastal California.
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 →
Hough SpringsCALIFORNIA62007
RumseyCALIFORNIA32007
Point ReyesCALIFORNIA32021
FairfaxCALIFORNIA32024
Bartlett SpsCALIFORNIA32018
Waterman GapCALIFORNIA32024
Glen EllenCALIFORNIA32004
PescaderoCALIFORNIA32023
StonyfordCALIFORNIA32018
CalpellaCALIFORNIA21979
CohassetCALIFORNIA12023
Carmel ValCALIFORNIA12021
TehamaCALIFORNIA11998
MoragaCALIFORNIA12009
Mark WestCALIFORNIA11993
Glen Ellen 2CALIFORNIA12022
Cal Hot SpgsCALIFORNIA12017

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