BirdAnalyst
Species · New Mexico · BBS 2025 Release · 1966–2024

Gadwall Population Trend in New Mexico

All statesWaterfowl

Gadwall in New Mexico has held roughly steady: down 2% on the route-weighted index since 1978.

-2%Since 1978
13Routes In State
35Years

Notable Gadwall Trends in New Mexico

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

Gadwall Population Forecast in New Mexico

If the recent trend holds, Gadwall in New Mexico is projected to stay roughly flat through 2029, near 0.18 (95% range 0.00–0.39). A 5-year backtest shows a typical error of ±98.6%, with 100% of held-out values landing inside the 95% band.

-9%Change by 2029
0.18Projected 2029 index
0.00–0.3995% range
±98.6%Backtest error
19732029
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
20250.180.000.39
20260.180.000.39
20270.180.000.39
20280.180.000.39
20290.180.000.39

Gadwall Survey Routes in New Mexico

Routes recording Gadwall in New Mexico.
Stinking Lk.1019961992
Grenville619791977
Clovis520132013
Dulce520242000
Capulin419931993
Wagon Mound419731973
Angel Fire 2420242005
Maxwell420132002
Gallinas420122012
Angel Fire220021993
Laborcita120021994
La Plata120122012
Red Rock119931992

Gadwall Population Trend in Other States

alaskaarizonacaliforniacoloradodelawareidahoillinoisiowakansasmassachusettsmichiganminnesotamissourimontananebraskanevadanew-jerseynew-yorknorth-dakotaoklahomaoregonpennsylvaniarhode-islandsouth-dakotatexasutahvermontwashingtonwisconsinwyoming

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