BirdAnalyst
Species · BCR 29 · BBS 2025 Release · 1966–2024

Hairy Woodpecker In Piedmont

All regionsPiedmontForest birds

Hairy Woodpecker in Piedmont has surged: up 91% on the route-weighted index since 1968.

+91%Since 1968TrendPercent 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 →
153Routes 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 →
58YearsYears 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 →

long arc increasecomputed indexTrend sourceWhether the figure is our own computed route-weighted index or an official USGS modeled estimate. The current build labels every trend as computed.Full methodology →

Hairy Woodpecker has surged in Piedmont: up 91% on the route-weighted index since 1968.

Hairy Woodpecker In Piedmont Population Forecast

If the recent trend holds, Hairy Woodpecker in Piedmont is projected to rise about 10% by 2029 — from 0.53 in 2024 to a central estimate of 0.59 (95% range 0.38–0.80). A 5-year backtest shows a typical error of ±12.3%, with 80% of held-out values landing inside the 95% band.

+10%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 →
0.59Projected 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 →
0.38–0.8095% 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 →
±12.3%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 Piedmont is projected to rise about 10% by 2029 — from 0.53 in 2024 to a central estimate of 0.59 (95% range 0.38–0.80). A 5-year backtest shows a typical error of ±12.3%, with 80% of held-out values landing inside the 95% band.19662029
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 →
20250.570.360.78
20260.570.360.79
20270.580.370.79
20280.580.370.80
20290.590.380.80

Routes In Piedmont

Routes recording Hairy Woodpecker in Piedmont.
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 →
MadonnaMARYLAND52022
DurhamNORTH-CAROLINA52024
OsmondNORTH-CAROLINA52022
TrymeVIRGINIA42022
RutledgeGEORGIA32023
WashingtonGEORGIA32008
WhitesburgGEORGIA32024
EmmitsburgMARYLAND32024
SawmillNORTH-CAROLINA32018
WilgroveNORTH-CAROLINA32022
CollegevillePENNSYLVANIA32023
Cauthens XrdSOUTH-CAROLINA32021
ProsperitySOUTH-CAROLINA32011
Ft Pickett NVIRGINIA31995
WedoweeALABAMA22023
MaxeysGEORGIA22023
HollonvilleGEORGIA22002
AthensGEORGIA22017
SiloamGEORGIA22018
GrovetownGEORGIA22005
HiramGEORGIA22018
Carrs StationGEORGIA22021
SharonGEORGIA22022
Good HopeGEORGIA22024
Yates CrossroadsGEORGIA22023

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