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

Green-winged Teal Population Trend in Minnesota

All statesWaterfowl

Green-winged Teal in Minnesota has declined: down 48% on the route-weighted index since 1972.

-48%Since 1972
33Routes In State
39Years

Notable Green-winged Teal Trends in Minnesota

No notable trend signals for Green-winged Teal in Minnesota. See the full index history below.

Green-winged Teal Population Forecast in Minnesota

If the recent trend holds, Green-winged Teal in Minnesota is projected to stay roughly flat through 2029, near 0.04 (95% range 0.00–0.14). A 5-year backtest shows a typical error of ±166.3%, with 100% of held-out values landing inside the 95% band.

n/aChange by 2029
0.04Projected 2029 index
0.00–0.1495% range
±166.3%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
20250.040.000.14
20260.040.000.14
20270.040.000.14
20280.040.000.14
20290.040.000.14

Green-winged Teal Survey Routes in Minnesota

Routes recording Green-winged Teal in Minnesota.
Tenney920141991
Tracy420172017
Mahtowa320072000
Mcgregor320042004
Greenbush320091999
Hartland219991982
Dawson219881988
Appleton219811981
Chokio219791978
Cromwell219941972
Pine River220191981
Hovland219761976
Debs220142014
Lake Bronson220111978
Sherburne Nr120051991
Big Stone120031998
Minnetonka120002000
Arlington119721972
Cass Lake119871987
Princeton119851970
Osseo119711971
Knapp119931973
Backus119801980
Edwards120001989
Evergreen119961996

Green-winged Teal Population Trend in Other States

alaskaarizonacaliforniacoloradoidahoillinoisindianaiowakansasmainemichiganmissourimontananebraskanevadanew-hampshirenew-mexiconew-yorknorth-dakotaoklahomaoregonpennsylvaniasouth-dakotatexasutahvermontwashingtonwisconsinwyoming

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