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Species · Montana · BBS 2025 Release · 1966–2024

Wilson's Warbler Population Trend in Montana

All statesForest birds

Wilson's Warbler in Montana has edged down: down 18% on the route-weighted index since 1972.

-18%Since 1972
39Routes In State
54Years

Notable Wilson's Warbler Trends in Montana

No notable trend signals for Wilson's Warbler in Montana. See the full index history below.

Wilson's Warbler Population Forecast in Montana

If the recent trend holds, Wilson's Warbler in Montana is projected to rise about 55% by 2029 — from 0.28 in 2024 to a central estimate of 0.44 (95% range 0.00–0.93). A 5-year backtest shows a typical error of ±41.2%, with 100% of held-out values landing inside the 95% band.

+55%Change by 2029
0.44Projected 2029 index
0.00–0.9395% range
±41.2%Backtest error
19702029
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
20250.440.000.93
20260.440.000.93
20270.440.000.93
20280.440.000.93
20290.440.000.93

Wilson's Warbler Survey Routes in Montana

Routes recording Wilson's Warbler in Montana.
Logan Pass620241980
Libby Dam520131981
Cleveland519791979
Arlee520231970
Sula520241978
Swan Lake520212015
Skalkaho519921992
Beaverhead319971973
Clancy320232021
Elevation Mt220242005
Woodman220241970
Clinton219821975
Whitefish Lake220242019
Ninemile220151993
Fish Creek220211997
Hebgen Lake220242019
Wise River220241993
Noxon219991999
Kalispell120211981
St Mary119921992
Victor120161994
Threemile Wa120131994
Cramer Creek120192005
Glen120172000
Greenough120031998

Wilson's Warbler Population Trend in Other States

alaskacaliforniacoloradoidahomainemichiganminnesotanevadanew-hampshirenew-mexiconew-yorkoregonutahvermontwashingtonwisconsinwyoming

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