BirdAnalyst
Species · BCR 5 · BBS 2025 Release · 1966–2024

Acorn Woodpecker In Northern Pacific Rainforest

All regionsNorthern Pacific RainforestForest birds

Acorn Woodpecker in Northern Pacific Rainforest has edged down: down 21% on the route-weighted index since 1970.

-21%Since 1970
47Routes In Region
56Years

Notable Signals

No notable trend signals for Acorn Woodpecker in Northern Pacific Rainforest. See the full index history below.

Forecast

If the recent trend holds, Acorn Woodpecker in Northern Pacific Rainforest is projected to fall about 38% by 2029 — from 1.8 in 2024 to a central estimate of 1.1 (95% range 0.00–2.8). A 5-year backtest shows a typical error of ±37.7%, with 100% of held-out values landing inside the 95% band.

-38%Change by 2029
1.1Projected 2029 index
0.00–2.895% range
±37.7%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
20251.30.003.0
20261.20.002.9
20271.20.002.9
20281.20.002.9
20291.10.002.8

Routes In Northern Pacific Rainforest

Routes recording Acorn Woodpecker in Northern Pacific Rainforest.
AlderpointCALIFORNIA302012
Emigrant Lake 2OREGON262024
Sams ValleyOREGON232024
LongvaleCALIFORNIA222023
UkiahCALIFORNIA222011
Shasta LakeCALIFORNIA202024
Hay ForkCALIFORNIA162017
Emigrant LkOREGON152001
Fish RockCALIFORNIA142014
Burnt RanchCALIFORNIA132016
UmpquaOREGON132024
DerbyOREGON121993
GazelleCALIFORNIA112021
South Fork MtnCALIFORNIA102022
GreenOREGON102024
SelmaOREGON92024
HullvilleCALIFORNIA82019
Junction CtyCALIFORNIA82012
French GulchCALIFORNIA82011
MccloudCALIFORNIA72021
Secret ValOREGON72022
LaytonvilleCALIFORNIA62024
Offield MtnCALIFORNIA52014
KorbelCALIFORNIA52024
Horse CreekCALIFORNIA42019

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