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

Black-headed Grosbeak Population Trend in Oregon

All statesGeneralists

Black-headed Grosbeak in Oregon has held roughly steady: up 5% on the route-weighted index since 1970.

+5%Since 1970
115Routes In State
56Years

Notable Black-headed Grosbeak Trends in Oregon

No notable trend signals for Black-headed Grosbeak in Oregon. See the full index history below.

Black-headed Grosbeak Population Forecast in Oregon

If the recent trend holds, Black-headed Grosbeak in Oregon is projected to rise about 10% by 2029 — from 6.1 in 2024 to a central estimate of 6.8 (95% range 5.0–8.6). A 5-year backtest shows a typical error of ±9%, with 100% of held-out values landing inside the 95% band.

+10%Change by 2029
6.8Projected 2029 index
5.0–8.695% range
±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
20256.74.98.5
20266.74.98.5
20276.74.98.5
20286.74.98.5
20296.85.08.6

Black-headed Grosbeak Survey Routes in Oregon

Routes recording Black-headed Grosbeak in Oregon.
Lorane5420241993
Ruch5120231992
Secret Val3720221975
Days Creek3020241970
Sams Valley3020241993
Prospect2720241993
Selma2620241993
Harlan 22420242011
Garfield2320231973
Coquille2320241994
Fisher2320101997
Sparta2219991973
Elkton2220241972
Derby2119931968
Mt Hood2120241972
Klickitat Mt2119961993
Salado1920241968
Wedderburn1820241970
Emigrant Lk1820011972
Sandy River1820061993
Scio1720241971
Glasgow1720241986
Umpqua1520241968
Hazel Camp1520221975
Hauser1419851970

Black-headed Grosbeak Population Trend in Other States

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