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

Cassin's Finch Population Trend in Oregon

All statesGeneralists

Cassin's Finch in Oregon has risen sharply: up 58% on the route-weighted index since 1970.

+58%Since 1970
70Routes In State
56Years

Notable Cassin's Finch Trends in Oregon

long arc increasecomputed index

Cassin's Finch has risen sharply in Oregon: up 58% on the route-weighted index since 1970.

Cassin's Finch Population Forecast in Oregon

If the recent trend holds, Cassin's Finch in Oregon is projected to fall about 15% by 2029 — from 3.4 in 2024 to a central estimate of 2.9 (95% range 0.37–5.5). A 5-year backtest shows a typical error of ±23.6%, with 100% of held-out values landing inside the 95% band.

-15%Change by 2029
2.9Projected 2029 index
0.37–5.595% range
±23.6%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
20252.90.345.5
20262.90.355.5
20272.90.355.5
20282.90.365.5
20292.90.375.5

Cassin's Finch Survey Routes in Oregon

Routes recording Cassin's Finch in Oregon.
Barnhouse3920241998
Silvies3820241994
Monument3120241993
Silver Creek2820241984
Donelly 22220242018
Newbridge1720241992
Hash Rock1720241983
Donnelly1720061994
Ochoco1619821972
Barnes Val1619871984
Mount Vernon1520241986
Zumwalt1420051995
Lapham Res.1420241992
Black Mtn.1420041993
Deschutes1220221979
Paisley1220241973
Bly1120011973
Eagle Creek920221993
Bly 2820242007
Ochoco820241993
Flora720231986
Troy720241992
Lakeview720241996
Eagle Rock619791971
Howard Mdws.620241992

Cassin's Finch Population Trend in Other States

arizonacaliforniacoloradoidahomontananevadanew-mexicosouth-dakotautahwashingtonwyoming

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