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

Ring-necked Duck Population Trend in Oregon

All statesWaterfowl

Ring-necked Duck in Oregon has held roughly steady: up 2% on the route-weighted index since 1984.

+2%Since 1984
17Routes In State
39Years

Notable Ring-necked Duck Trends in Oregon

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

Ring-necked Duck Population Forecast in Oregon

If the recent trend holds, Ring-necked Duck in Oregon is projected to rise about 31% by 2029 — from 0.29 in 2024 to a central estimate of 0.38 (95% range 0.03–0.73). A 5-year backtest shows a typical error of ±183.8%, with 80% of held-out values landing inside the 95% band.

+31%Change by 2029
0.38Projected 2029 index
0.03–0.7395% range
±183.8%Backtest error
19812029
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
20250.350.000.70
20260.360.010.71
20270.360.010.71
20280.370.020.72
20290.380.030.73

Ring-necked Duck Survey Routes in Oregon

Routes recording Ring-necked Duck in Oregon.
Modoc Point2120181993
Warner Vally2020241994
Bly 21820212007
Barnes Val619871984
Catlow Rim620232012
Lapham Res.520041999
Zumwalt420042004
Elk Lake420241982
Blizzard Gap420191989
Bly319971992
Glasgow320242024
Ruch220002000
Granite220082008
Clover Creek219941994
Chinchalo220221996
Desolation119991999
Days Creek119861981

Ring-necked Duck Population Trend in Other States

alabamaalaskaarizonacaliforniacoloradoidahoiowamainemichiganminnesotamontananebraskanevadanew-hampshirenew-yorknorth-dakotaohiosouth-dakotautahvermontwashingtonwisconsinwyoming

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