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Species · BCR 14 · BBS 2026 Release · 1966–2025

Hairy Woodpecker In Atlantic Northern Forest

All regionsAtlantic Northern ForestForest birds

Hairy Woodpecker in Atlantic Northern Forest has surged: up 116% on the route-weighted index since 1968.

+116%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 →
155Routes 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 →
59YearsYears 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 Atlantic Northern Forest: up 116% on the route-weighted index since 1968.

Hairy Woodpecker In Atlantic Northern Forest Population Forecast

If the recent trend holds, Hairy Woodpecker in Atlantic Northern Forest is projected to rise about 16% by 2030 — from 1.8 in 2025 to a central estimate of 2.1 (95% range 1.5–2.6). A 5-year backtest shows a typical error of ±10.4%, with 100% of held-out values landing inside the 95% band.

+16%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 →
2.1Projected 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 →
1.5–2.695% 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 →
±10.4%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, Hairy Woodpecker in Atlantic Northern Forest is projected to rise about 16% by 2030 — from 1.8 in 2025 to a central estimate of 2.1 (95% range 1.5–2.6). A 5-year backtest shows a typical error of ±10.4%, with 100% of held-out values landing inside the 95% band.19662030
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 →
20262.01.42.6
20272.01.52.6
20282.01.52.6
20292.01.52.6
20302.11.52.6

Routes In Atlantic Northern Forest

Routes recording Hairy Woodpecker in Atlantic Northern Forest.
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 →
WaiteMAINE121977
NorthfieldMAINE91981
Pillsbury PdMAINE71968
MarlboroVERMONT62025
MiddlesexVERMONT62025
EastbrookMAINE52024
Dixvil NotchNEW-HAMPSHIRE52016
DegrasseNEW-YORK52025
HardwickVERMONT52024
HancockMAINE42025
CharlestonMAINE42021
Seboomook LkMAINE42014
Clayton LakeMAINE42001
Baker LakeMAINE42005
CornvilleMAINE42025
Mt ChocoruaNEW-HAMPSHIRE42025
MarlowNEW-HAMPSHIRE42024
ClarksvilleNEW-HAMPSHIRE42024
Jeffers NtchNEW-HAMPSHIRE42019
PetersburgNEW-YORK42012
InletNEW-YORK42017
SabattisNEW-YORK41983
Northfld FlsVERMONT42025
ReedsMAINE32025
HarmonyMAINE32025

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