BirdAnalyst
Species · BCR 32 · BBS 2025 Release · 1966–2024

Western Bluebird In Coastal California

All regionsCoastal CaliforniaForest birds

Western Bluebird in Coastal California has held roughly steady: down 3% on the route-weighted index since 1970.

-3%Since 1970
107Routes In Region
56Years

Notable Signals

No notable trend signals for Western Bluebird in Coastal California. See the full index history below.

Forecast

If the recent trend holds, Western Bluebird in Coastal California is projected to rise about 22% by 2029 — from 5.4 in 2024 to a central estimate of 6.6 (95% range 4.3–9.0). A 5-year backtest shows a typical error of ±32%, with 80% of held-out values landing inside the 95% band.

+22%Change by 2029
6.6Projected 2029 index
4.3–9.095% range
±32%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
20256.54.28.9
20266.64.28.9
20276.64.38.9
20286.64.38.9
20296.64.39.0

Routes In Coastal California

Routes recording Western Bluebird in Coastal California.
Tres Pinos 2CALIFORNIA572011
Mt Pinos 2CALIFORNIA312024
ValyermoCALIFORNIA252019
Cal Hot SpgsCALIFORNIA252019
White RiverCALIFORNIA221992
AdelaidaCALIFORNIA212024
ReddingCALIFORNIA211983
Glen EllenCALIFORNIA202004
Yolla BollyCALIFORNIA162024
JacksonCALIFORNIA141992
Yokohl ValCALIFORNIA131997
Mark WestCALIFORNIA132024
Big BearCALIFORNIA121986
TujungaCALIFORNIA122021
CoyoteCALIFORNIA122023
Lake HemetCALIFORNIA111986
PolomaCALIFORNIA112024
San Benito Mtn.CALIFORNIA112009
Red BluffCALIFORNIA102024
SisquocCALIFORNIA102014
Mesa GrandeCALIFORNIA92024
Lockwood ValCALIFORNIA92019
JacumbaCALIFORNIA92024
Gold HillCALIFORNIA92024
LockwoodCALIFORNIA92024

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