BirdAnalyst
Species · California · BBS 2025 Release · 1966–2024

Wrentit Population Trend in California

All statesGeneralists

Wrentit in California has edged down: down 22% on the route-weighted index since 1970.

-22%Since 1970
154Routes In State
56Years

Notable Wrentit Trends in California

No notable trend signals for Wrentit in California. See the full index history below.

Wrentit Population Forecast in California

If the recent trend holds, Wrentit in California is projected to fall about 11% by 2029 — from 6.2 in 2024 to a central estimate of 5.5 (95% range 3.6–7.4). A 5-year backtest shows a typical error of ±17.4%, with 100% of held-out values landing inside the 95% band.

-11%Change by 2029
5.5Projected 2029 index
3.6–7.495% range
±17.4%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
20255.63.77.5
20265.63.77.4
20275.63.77.4
20285.53.77.4
20295.53.67.4

Wrentit Survey Routes in California

Routes recording Wrentit in California.
Elsinore Mtn12420241970
Rumsey7920081969
Lake Cachuma7620161972
Mt Baldy7420241970
Hough Springs6320071999
Cuyamaca Pk6120241970
San Benito Mtn.5820092003
Stonyford4420182015
Jofegan 24020242024
Poway4019801973
Tujunga3520211970
Forest Hill3420221997
Silver City3320131972
Tomhead3220111998
Folsom3120241984
Greenfield3120241973
Coulterville3020191997
Bartlett Sps2920181972
Big Flat2920142002
Foster Park2719941968
Lake Berryessa2620242023
Alamar2420171997
French Gulch2220112002
Fish Rock2120141968
Jofegan2120232006

Wrentit Population Trend in Other States

oregon

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