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

Townsend's Solitaire Population Trend in Colorado

All statesForest birds

Townsend's Solitaire in Colorado has surged: up 93% on the route-weighted index since 1970.

+93%Since 1970
81Routes In State
55Years

Notable Townsend's Solitaire Trends in Colorado

long arc increasecomputed index

Townsend's Solitaire has surged in Colorado: up 93% on the route-weighted index since 1970.

Townsend's Solitaire Population Forecast in Colorado

If the recent trend holds, Townsend's Solitaire in Colorado is projected to rise about 59% by 2029 — from 0.39 in 2024 to a central estimate of 0.62 (95% range 0.33–0.91). A 5-year backtest shows a typical error of ±70.4%, with 60% of held-out values landing inside the 95% band.

+59%Change by 2029
0.62Projected 2029 index
0.33–0.9195% range
±70.4%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
20250.590.300.88
20260.600.310.89
20270.610.320.90
20280.610.320.91
20290.620.330.91

Townsend's Solitaire Survey Routes in Colorado

Routes recording Townsend's Solitaire in Colorado.
Piceance Basin1120042003
Deadman Rd.820241994
Moon Pass820242003
Buffalo Park720231992
Mount Evans620241996
Castleton320221988
Villegreen319981998
Guanella Pas320241992
Dinosaur320021999
Weston Pass319991999
Como320241996
Cochetopa Pass320232001
Yampa220191971
Wilson Creek220172005
Lost Lake220241993
Tarryall220191995
Lake City220011997
Pinos Creek219891989
Colona 2220192017
Steamboat L.220181999
Baxter Pass220162013
Powderhorn220232002
Stillwater Pass220091999
Gold Hill220121998
Owl Creek Pass220131998

Townsend's Solitaire Population Trend in Other States

alaskaarizonacaliforniaidahomontananebraskanevadanew-mexicooregonsouth-dakotautahwashingtonwyoming

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