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

Canvasback Population Trend in Montana

All statesWaterfowl

Canvasback in Montana has declined: down 35% on the route-weighted index since 1978.

-35%Since 1978
35Routes In State
41Years

Notable Canvasback Trends in Montana

No notable trend signals for Canvasback in Montana. See the full index history below.

Canvasback Population Forecast in Montana

If the recent trend holds, Canvasback in Montana is projected to stay roughly flat through 2029, near 0.19 (95% range 0.00–0.62). A 5-year backtest shows a typical error of ±136.1%, with 100% of held-out values landing inside the 95% band.

n/aChange by 2029
0.19Projected 2029 index
0.00–0.6295% range
±136.1%Backtest error
19752029
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
20250.190.000.62
20260.190.000.62
20270.190.000.62
20280.190.000.62
20290.190.000.62

Canvasback Survey Routes in Montana

Routes recording Canvasback in Montana.
Westby1220212021
Highwood820141994
Wolf Point820232023
Augusta620141978
Ester Lake620232016
Cleveland420121982
Glasgow420122012
Saco420192019
Pablo Res.420072007
Redstone320022002
Ingomar319931993
St Mary219811981
Virgelle219961996
Harlem219931990
Malta220111976
Great Falls219791979
Leroy220142014
Roy220082008
Jordan219871987
Circle220191983
Two Dot220242000
Beaverhead220191975
Gildford220232023
Chinook220232016
Chuffey Spring220192019

Canvasback Population Trend in Other States

alaskacaliforniacoloradoidahokansasminnesotanebraskanevadanew-yorknorth-dakotaoregonsouth-dakotautahwashingtonwyoming

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