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

Burrowing Owl In Coastal California

All regionsCoastal CaliforniaGeneralists

Burrowing Owl in Coastal California has collapsed: down 94% on the route-weighted index since 1970.

-94%Since 1970
35Routes In Region
50Years

Notable Signals

long arc declinecomputed index

Burrowing Owl has collapsed in Coastal California: down 94% on the route-weighted index since 1970.

Forecast

If the recent trend holds, Burrowing Owl in Coastal California is projected to fall about 100% by 2024 — from 0.14 in 2019 to a central estimate of 0.00 (95% range 0.00–0.78). A 5-year backtest shows a typical error of ±133.1%, with 100% of held-out values landing inside the 95% band.

-100%Change by 2024
0.00Projected 2024 index
0.00–0.7895% range
±133.1%Backtest error
19682024
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
20200.000.000.78
20210.000.000.78
20220.000.000.78
20230.000.000.78
20240.000.000.78

Routes In Coastal California

Routes recording Burrowing Owl in Coastal California.
Mesa GrandeCALIFORNIA162002
OilfieldsCALIFORNIA151981
TranquillityCALIFORNIA152004
Buena VistaCALIFORNIA72019
HollisterCALIFORNIA62007
AtwaterCALIFORNIA52007
CaruthersCALIFORNIA41986
BakersfieldCALIFORNIA42004
MorenoCALIFORNIA42012
San YsidroCALIFORNIA31976
VentucopaCALIFORNIA31972
ShafterCALIFORNIA31989
ArvinCALIFORNIA32016
Hollister 2CALIFORNIA32012
RiovistaCALIFORNIA22018
CollegevilleCALIFORNIA22004
HughsonCALIFORNIA21987
OrlandCALIFORNIA22001
AthloneCALIFORNIA21989
PenningtonCALIFORNIA11978
CohassetCALIFORNIA11984
PowayCALIFORNIA11974
S CatalinaCALIFORNIA11993
MaricopaCALIFORNIA11996
AnzaCALIFORNIA11972

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