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Species · Montana · BBS 2025 Release · 1966–2024

Chestnut-backed Chickadee Population Trend in Montana

All statesForest birds

Chestnut-backed Chickadee in Montana has increased: up 39% on the route-weighted index since 1988.

+39%Since 1988
11Routes In State
35Years

Notable Chestnut-backed Chickadee Trends in Montana

No notable trend signals for Chestnut-backed Chickadee in Montana. See the full index history below.

Chestnut-backed Chickadee Population Forecast in Montana

If the recent trend holds, Chestnut-backed Chickadee in Montana is projected to rise about 55% by 2029 — from 0.09 in 2024 to a central estimate of 0.15 (95% range 0.02–0.27). A 5-year backtest shows a typical error of ±34.4%, with 100% of held-out values landing inside the 95% band.

+55%Change by 2029
0.15Projected 2029 index
0.02–0.2795% range
±34.4%Backtest error
19862029
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
20250.140.020.27
20260.140.020.27
20270.140.020.27
20280.140.020.27
20290.150.020.27

Chestnut-backed Chickadee Survey Routes in Montana

Routes recording Chestnut-backed Chickadee in Montana.
Logan Pass320231988
Noxon320232004
St Regis320241988
Fish Creek220222022
Inside Road120061993
Libby Dam120241989
Whitefish Lake120242016
Arlee120241986
Swan Lake120232015
Woodman120242016
Thompson Riv120242006

Chestnut-backed Chickadee Population Trend in Other States

alaskacaliforniaidahooregonwashington

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