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

Purple Finch Population Trend in Oregon

All statesGeneralists

Purple Finch in Oregon has collapsed: down 78% on the route-weighted index since 1970.

-78%Since 1970
80Routes In State
56Years

Notable Purple Finch Trends in Oregon

long arc declinecomputed index

Purple Finch has collapsed in Oregon: down 78% on the route-weighted index since 1970.

Purple Finch Population Forecast in Oregon

If the recent trend holds, Purple Finch in Oregon is projected to fall about 53% by 2029 — from 0.99 in 2024 to a central estimate of 0.46 (95% range 0.00–2.4). A 5-year backtest shows a typical error of ±56%, with 100% of held-out values landing inside the 95% band.

-53%Change by 2029
0.46Projected 2029 index
0.00–2.495% range
±56%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
20250.630.002.5
20260.590.002.5
20270.550.002.4
20280.510.002.4
20290.460.002.4

Purple Finch Survey Routes in Oregon

Routes recording Purple Finch in Oregon.
Granite3019891989
Coquille1220241994
Hauser1119851970
Mt Hood920241972
Badger Creek920241992
Secret Val720221975
Wizard Falls720222018
Sandy River620061993
Tualatin520241969
Scio520241975
Nicolai Mtn.520241993
Desolation519931993
Lorane520241993
Wedderburn420231970
Svensen419921990
Summit Pr420132009
Green420241994
Klickitat Mt419961993
Salem420241993
Prospect420241993
Riley Peak420161994
Shellrock320171968
Ochoco319761973
Winberry320231968
Hazel Camp320221975

Purple Finch Population Trend in Other States

alaskacaliforniaconnecticutindianamainemarylandmassachusettsmichiganminnesotanew-hampshirenew-jerseynew-yorknorth-dakotaohiopennsylvaniarhode-islandvermontwashingtonwest-virginiawisconsin

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