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Species · Oregon · BBS 2025 Release · 1966–2024

California Scrub-Jay Population Trend in Oregon

All statesGeneralists

California Scrub-Jay in Oregon has risen sharply: up 51% on the route-weighted index since 1970.

+51%Since 1970
43Routes In State
56Years

Notable California Scrub-Jay Trends in Oregon

long arc increasecomputed index

California Scrub-Jay has risen sharply in Oregon: up 51% on the route-weighted index since 1970.

California Scrub-Jay Population Forecast in Oregon

If the recent trend holds, California Scrub-Jay in Oregon is projected to rise about 19% by 2029 — from 2.1 in 2024 to a central estimate of 2.5 (95% range 1.6–3.4). A 5-year backtest shows a typical error of ±8.4%, with 100% of held-out values landing inside the 95% band.

+19%Change by 2029
2.5Projected 2029 index
1.6–3.495% range
±8.4%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
20252.51.53.4
20262.51.53.4
20272.51.53.4
20282.51.53.4
20292.51.63.4

California Scrub-Jay Survey Routes in Oregon

Routes recording California Scrub-Jay in Oregon.
Emigrant Lk2320011972
Garfield2220231973
Derby1919931968
Canby1920241993
Dayton1820241973
Adair1720241971
Salem1720241993
Green1520241994
Umpqua1420241969
Emigrant Lake 21420242002
Mcminnville1420241994
Elkton1220241973
Scio1020241971
Mt Hood1020241976
Scappoose920231995
Modoc Point820181971
Ruch820231992
Tualatin720241968
Sams Valley720241993
Wedderburn620241970
Barnes Val619721972
Deschutes420242004
Days Creek420231970
Secret Val420221975
Modoc Point 2320242024

California Scrub-Jay Population Trend in Other States

californianevadawashington

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