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

Brewer's Blackbird In Northern Pacific Rainforest

All regionsNorthern Pacific RainforestGeneralists

Brewer's Blackbird in Northern Pacific Rainforest has fallen sharply: down 73% on the route-weighted index since 1970.

-73%Since 1970
97Routes In Region
56Years

Notable Signals

long arc declinecomputed index

Brewer's Blackbird has fallen sharply in Northern Pacific Rainforest: down 73% on the route-weighted index since 1970.

Forecast

If the recent trend holds, Brewer's Blackbird in Northern Pacific Rainforest is projected to fall about 27% by 2029 — from 4.5 in 2024 to a central estimate of 3.3 (95% range 0.00–11). A 5-year backtest shows a typical error of ±31.1%, with 100% of held-out values landing inside the 95% band.

-27%Change by 2029
3.3Projected 2029 index
0.00–1195% range
±31.1%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
20254.80.0012
20264.50.0012
20274.10.0012
20283.70.0011
20293.30.0011

Routes In Northern Pacific Rainforest

Routes recording Brewer's Blackbird in Northern Pacific Rainforest.
Bay ViewWASHINGTON1152017
YrekaCALIFORNIA1102019
Emigrant LkOREGON1022001
GazelleCALIFORNIA952021
Horse CreekCALIFORNIA452019
Sandy RiverOREGON362006
AlderpointCALIFORNIA332012
Crescent CtyCALIFORNIA322024
ElktonOREGON322024
CanbyOREGON322024
SalemOREGON322024
DaytonOREGON302024
UmpquaOREGON232024
McminnvilleOREGON232024
DerbyOREGON221993
AdairOREGON192024
IssaquahWASHINGTON191987
Nicolai Mtn.OREGON172024
Martins FyCALIFORNIA151997
OrleansCALIFORNIA151994
CoquilleOREGON142023
South ElmaWASHINGTON142024
LongvaleCALIFORNIA132012
RainierWASHINGTON132019
Warm Beach 2WASHINGTON132022

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