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

Gadwall Population Trend in Minnesota

All statesWaterfowl

Gadwall in Minnesota has declined: down 29% on the route-weighted index since 1978.

-29%Since 1978
21Routes In State
38Years

Notable Gadwall Trends in Minnesota

No notable trend signals for Gadwall in Minnesota. See the full index history below.

Gadwall Population Forecast in Minnesota

If the recent trend holds, Gadwall in Minnesota is projected to fall about 42% by 2029 — from 0.11 in 2024 to a central estimate of 0.06 (95% range 0.00–0.36). A 5-year backtest shows a typical error of ±270.7%, with 100% of held-out values landing inside the 95% band.

-42%Change by 2029
0.06Projected 2029 index
0.00–0.3695% range
±270.7%Backtest error
19742029
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
20250.070.000.36
20260.070.000.36
20270.070.000.36
20280.060.000.36
20290.060.000.36

Gadwall Survey Routes in Minnesota

Routes recording Gadwall in Minnesota.
Tenney420151990
Glenwood320011993
Ash Creek219941994
Courtland219851978
Redwood Fall220082008
Osseo220012001
Appleton220241981
Gluek219901990
Chokio220241979
Glyndon220241990
Beltrami219781978
Lake Bronson220032003
New London220001994
Chokio North220102010
Lakeville119911991
Big Stone120081995
Dawson120061974
Erie119931984
Grygla119921983
Tracy120192006
Greenbush120072004

Gadwall Population Trend in Other States

alaskaarizonacaliforniacoloradodelawareidahoillinoisiowakansasmassachusettsmichiganmissourimontananebraskanevadanew-jerseynew-mexiconew-yorknorth-dakotaoklahomaoregonpennsylvaniarhode-islandsouth-dakotatexasutahvermontwashingtonwisconsinwyoming

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