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

Ruddy Duck Population Trend in Oregon

All statesWaterfowl

Ruddy Duck in Oregon has surged: up 78% on the route-weighted index since 1974.

+78%Since 1974
16Routes In State
38Years

Notable Ruddy Duck Trends in Oregon

long arc increasecomputed index

Ruddy Duck has surged in Oregon: up 77% on the route-weighted index since 1974.

Ruddy Duck Population Forecast in Oregon

If the recent trend holds, Ruddy Duck in Oregon is projected to rise about 89% by 2029 — from 0.11 in 2024 to a central estimate of 0.20 (95% range 0.00–0.77). A 5-year backtest shows a typical error of ±48.7%, with 80% of held-out values landing inside the 95% band.

+89%Change by 2029
0.20Projected 2029 index
0.00–0.7795% range
±48.7%Backtest error
19722029
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
20250.210.000.77
20260.210.000.77
20270.210.000.77
20280.200.000.77
20290.200.000.77

Ruddy Duck Survey Routes in Oregon

Routes recording Ruddy Duck in Oregon.
Fish Lake1120231972
Princeton919831978
Blizzard Gap920231984
Madras620222001
Catlow Rim520242012
Sheaville420132013
Lone Rock320152015
Warner Vally320241994
Bly 2220192010
Adair220041974
Merrill220132013
Deschutes220242019
Modoc Point220181973
Zumwalt119981998
Lapham Res.120022002
Chinchalo120071999

Ruddy Duck Population Trend in Other States

arizonacaliforniacoloradoidahoillinoisindianaiowakansasmichiganminnesotamontananebraskanevadanew-mexiconew-yorknorth-dakotaohiooklahomasouth-dakotatexasutahwashingtonwisconsinwyoming

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