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

Lazuli Bunting In Coastal California

All regionsCoastal CaliforniaGeneralists

Lazuli Bunting in Coastal California has risen sharply: up 52% on the route-weighted index since 1970.

+52%Since 1970
98Routes In Region
56Years

Notable Signals

long arc increasecomputed index

Lazuli Bunting has risen sharply in Coastal California: up 52% on the route-weighted index since 1970.

Forecast

If the recent trend holds, Lazuli Bunting in Coastal California is projected to stay roughly flat through 2029, near 1.9 (95% range 0.63–3.1). A 5-year backtest shows a typical error of ±110%, with 80% of held-out values landing inside the 95% band.

+7%Change by 2029
1.9Projected 2029 index
0.63–3.195% range
±110%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
20251.80.613.1
20261.80.623.1
20271.90.623.1
20281.90.633.1
20291.90.633.1

Routes In Coastal California

Routes recording Lazuli Bunting in Coastal California.
Elsinore MtnCALIFORNIA302024
AnzaCALIFORNIA161995
PowayCALIFORNIA101980
OnoCALIFORNIA102011
Oak GroveCALIFORNIA92023
Lake SuccessCALIFORNIA81996
JacksonCALIFORNIA81986
Mt BaldyCALIFORNIA72024
ReddingCALIFORNIA71983
CohassetCALIFORNIA62023
Green ValleyCALIFORNIA62023
Anza 2CALIFORNIA62024
Red BluffCALIFORNIA52024
Yokohl ValCALIFORNIA51997
Foster ParkCALIFORNIA51994
Harbor LakeCALIFORNIA51975
S CatalinaCALIFORNIA52019
El ToroCALIFORNIA51986
FallsvaleCALIFORNIA51981
SangerCALIFORNIA52024
PescaderoCALIFORNIA52024
Lockwood ValCALIFORNIA42019
Mt LagunaCALIFORNIA41987
Lake CachumaCALIFORNIA42016
Waterman GapCALIFORNIA42024

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