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Species · Washington · BBS 2025 Release · 1966–2024

Cassin's Finch Population Trend in Washington

All statesGeneralists

Cassin's Finch in Washington has declined: down 42% on the route-weighted index since 1970.

-42%Since 1970
42Routes In State
56Years

Notable Cassin's Finch Trends in Washington

No notable trend signals for Cassin's Finch in Washington. See the full index history below.

Cassin's Finch Population Forecast in Washington

If the recent trend holds, Cassin's Finch in Washington is projected to fall about 63% by 2029 — from 2.0 in 2024 to a central estimate of 0.75 (95% range 0.00–2.2). A 5-year backtest shows a typical error of ±64.7%, with 80% of held-out values landing inside the 95% band.

-63%Change by 2029
0.75Projected 2029 index
0.00–2.295% range
±64.7%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
20250.870.002.4
20260.840.002.3
20270.810.002.3
20280.780.002.3
20290.750.002.2

Cassin's Finch Survey Routes in Washington

Routes recording Cassin's Finch in Washington.
Omak Creek3820241996
Cloverland1420241993
Harwood1219931993
Ardenvoir1119871971
Blewett Pass1020241992
Ellensburg920241981
Lake Chelan720241988
Nighthawk620241995
E. Mt. Adams520231995
Rimrock520241968
Twin Lakes520241983
Packwood520051976
Pomeroy520241993
Warm Beach419911991
Snowden420221973
Tonasket420151984
Spring Lake420241982
Curlew420131992
Deer Park420121994
Chewelah320191977
L Pend O Nwr320241995
Ronald320241973
Wilbur320221988
White Chuck320122012
Mt St Helens320181998

Cassin's Finch Population Trend in Other States

arizonacaliforniacoloradoidahomontananevadanew-mexicooregonsouth-dakotautahwyoming

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