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

Western Tanager Population Trend in Washington

All statesGeneralists

Western Tanager in Washington has surged: up 83% on the route-weighted index since 1970.

+83%Since 1970
85Routes In State
56Years

Notable Western Tanager Trends in Washington

long arc increasecomputed index

Western Tanager has surged in Washington: up 83% on the route-weighted index since 1970.

Western Tanager Population Forecast in Washington

If the recent trend holds, Western Tanager in Washington is projected to stay roughly flat through 2029, near 15 (95% range 11–19). A 5-year backtest shows a typical error of ±9.6%, with 100% of held-out values landing inside the 95% band.

-7%Change by 2029
15Projected 2029 index
11–1995% range
±9.6%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
2025141018
2026141019
2027151019
2028151119
2029151119

Western Tanager Survey Routes in Washington

Routes recording Western Tanager in Washington.
Blewett Pass10120241992
Cusick5220241982
E. Mt. Adams4820241995
Carlton4620221992
L Pend O Nwr4520241995
Rimrock3920241968
Omak Creek3920241996
Ronald3320241973
Snowden3220241971
Cloverland3120241993
Mendota 33120242005
Kendall2920241981
Cedar Falls2920141993
Mazama2920221993
Camas2820091982
Leavenworth2720241981
L. Wenatchee2620241993
Mt. Adams2520241993
Glacier2420241975
Twin Lakes2420241983
Sullivan Lk2419991999
Winthrop2320221983
Spring Lake2220241982
Index 22220232014
Cougar2120231968

Western Tanager Population Trend in Other States

alaskaarizonacaliforniacoloradoidahomontananebraskanevadanew-mexicooregonsouth-dakotatexasutahwyoming

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