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

Townsend's Solitaire Population Trend in Washington

All statesForest birds

Townsend's Solitaire in Washington has risen sharply: up 60% on the route-weighted index since 1971.

+60%Since 1971
49Routes In State
53Years

Notable Townsend's Solitaire Trends in Washington

long arc increasecomputed index

Townsend's Solitaire has risen sharply in Washington: up 60% on the route-weighted index since 1971.

Townsend's Solitaire Population Forecast in Washington

If the recent trend holds, Townsend's Solitaire in Washington is projected to rise about 65% by 2029 — from 0.28 in 2024 to a central estimate of 0.47 (95% range 0.23–0.70). A 5-year backtest shows a typical error of ±85.4%, with 40% of held-out values landing inside the 95% band.

+65%Change by 2029
0.47Projected 2029 index
0.23–0.7095% range
±85.4%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
20250.450.210.68
20260.450.210.69
20270.460.220.69
20280.460.220.70
20290.470.230.70

Townsend's Solitaire Survey Routes in Washington

Routes recording Townsend's Solitaire in Washington.
Omak Creek720241998
Keller320071968
E. Mt. Adams320232016
Cusick320241984
Turnbull Nwr220231995
Sullivan Lake 2220182000
Winthrop220221983
Leavenworth220181984
Wilbur220241986
Carlton220191993
Curlew220131999
Sullivan Lk219991999
Mt St Helens220082001
Deer Park220151994
Newhalem120191999
Twisp120221984
Cascade Riv120001988
Chewelah120211979
No Cascades120191988
L Pend O Nwr120221996
Ardenvoir119871972
Reardan120221968
Cougar119861986
Rimrock120231968
Asotin120242024

Townsend's Solitaire Population Trend in Other States

alaskaarizonacaliforniacoloradoidahomontananebraskanevadanew-mexicooregonsouth-dakotautahwyoming

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