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

Ring-necked Duck Population Trend in Colorado

All statesWaterfowl

Ring-necked Duck in Colorado has declined: down 47% on the route-weighted index since 1988.

-47%Since 1988
29Routes In State
35Years

Notable Ring-necked Duck Trends in Colorado

No notable trend signals for Ring-necked Duck in Colorado. See the full index history below.

Ring-necked Duck Population Forecast in Colorado

If the recent trend holds, Ring-necked Duck in Colorado is projected to stay roughly flat through 2029, near 0.12 (95% range 0.00–0.35). A 5-year backtest shows a typical error of ±209.8%, with 100% of held-out values landing inside the 95% band.

+5%Change by 2029
0.12Projected 2029 index
0.00–0.3595% range
±209.8%Backtest error
19862029
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
20250.120.000.35
20260.120.000.35
20270.120.000.35
20280.120.000.35
20290.120.000.35

Ring-necked Duck Survey Routes in Colorado

Routes recording Ring-necked Duck in Colorado.
Stillwater Pass1220061998
Willow Peak620101997
Piedra620161992
Yellowjacket Pass620242003
Alamosa419881988
Weston Pass319991997
Gold Hill320052005
Rifle Falls320062006
Aspen220171986
Rio Grnds Rs220242006
Mcphee Res.220241999
Dunckley Pas220172015
Cochetopa Pass220222022
Cortez219891989
Yampa119861986
Kiowa119871987
Colona119961996
Parlin120142014
Cortez 2120162013
Tarryall120142014
Dinosaur120211995
Doyleville120231988
Ragged Mtn.120161998
Powderhorn120041998
Paonia119981998

Ring-necked Duck Population Trend in Other States

alabamaalaskaarizonacaliforniaidahoiowamainemichiganminnesotamontananebraskanevadanew-hampshirenew-yorknorth-dakotaohiooregonsouth-dakotautahvermontwashingtonwisconsinwyoming

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