BirdAnalyst
Species · BCR 15 · BBS 2025 Release · 1966–2024

Hairy Woodpecker In Sierra Nevada

All regionsSierra NevadaForest birds

Hairy Woodpecker in Sierra Nevada has surged: up 83% on the route-weighted index since 1970.

+83%Since 1970
40Routes In Region
56Years

Notable Signals

long arc increasecomputed index

Hairy Woodpecker has surged in Sierra Nevada: up 83% on the route-weighted index since 1970.

Forecast

If the recent trend holds, Hairy Woodpecker in Sierra Nevada is projected to fall about 24% by 2029 — from 3.6 in 2024 to a central estimate of 2.7 (95% range 1.2–4.3). A 5-year backtest shows a typical error of ±34.5%, with 80% of held-out values landing inside the 95% band.

-24%Change by 2029
2.7Projected 2029 index
1.2–4.395% range
±34.5%Backtest error
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 index95% low95% high
20252.61.14.1
20262.71.24.2
20272.71.24.2
20282.71.24.2
20292.71.24.3

Routes In Sierra Nevada

Routes recording Hairy Woodpecker in Sierra Nevada.
ChilcootCALIFORNIA132024
Pollock PinesCALIFORNIA112024
GeneseeCALIFORNIA102024
ChesterCALIFORNIA82016
Forest HillCALIFORNIA62022
WestvilleCALIFORNIA52024
RivertonCALIFORNIA52023
Hat CreekCALIFORNIA52018
LakeshoreCALIFORNIA52024
Eagle LakeCALIFORNIA42024
PlacervilleCALIFORNIA42024
Pine MountainCALIFORNIA42017
Bass LakeCALIFORNIA32019
LumberyardCALIFORNIA32024
Butte MeadowCALIFORNIA32014
GoumazCALIFORNIA32011
Little TruckeeCALIFORNIA32023
WoodfordsCALIFORNIA22024
Greenhorn MtCALIFORNIA22008
Silver CityCALIFORNIA22010
Kings CanyonCALIFORNIA22024
Tuolumne GroveCALIFORNIA22024
SattleyCALIFORNIA22024
Higgins CornCALIFORNIA22023
Meadow ValleyCALIFORNIA22024

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