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

American Goldfinch In Coastal California

All regionsCoastal CaliforniaGeneralists

American Goldfinch in Coastal California has risen sharply: up 54% on the route-weighted index since 1970.

+54%Since 1970
85Routes In Region
56Years

Notable Signals

long arc increasecomputed index

American Goldfinch has risen sharply in Coastal California: up 54% on the route-weighted index since 1970.

Forecast

If the recent trend holds, American Goldfinch in Coastal California is projected to rise about 47% by 2029 — from 3.0 in 2024 to a central estimate of 4.4 (95% range 1.3–7.5). A 5-year backtest shows a typical error of ±88.9%, with 100% of held-out values landing inside the 95% band.

+47%Change by 2029
4.4Projected 2029 index
1.3–7.595% range
±88.9%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
20254.21.17.3
20264.31.27.3
20274.31.27.4
20284.41.37.4
20294.41.37.5

Routes In Coastal California

Routes recording American Goldfinch in Coastal California.
Lake SuccessCALIFORNIA421978
OrovilleCALIFORNIA352024
WestleyCALIFORNIA332024
Collegeville 2CALIFORNIA312023
AtwaterCALIFORNIA162012
ZamoraCALIFORNIA152024
PenningtonCALIFORNIA142024
Cp. PendletonCALIFORNIA132004
HughsonCALIFORNIA102024
Tres PinosCALIFORNIA101996
Mt LagunaCALIFORNIA101986
Lake Hemet 2CALIFORNIA91993
AuburnCALIFORNIA81980
Lockwood ValCALIFORNIA82008
Cuyamaca PkCALIFORNIA81975
GlennCALIFORNIA82023
Glen EllenCALIFORNIA72004
Red BluffCALIFORNIA62022
HollisterCALIFORNIA62011
Morro BayCALIFORNIA62018
Point ReyesCALIFORNIA62023
JacumbaCALIFORNIA61976
Staten Is.CALIFORNIA62024
Tracy 2CALIFORNIA62024
Ora LomaCALIFORNIA52024

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