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

Wood Duck Population Trend in California

All statesWaterfowl

Wood Duck in California has edged up: up 24% on the route-weighted index since 1971.

+24%Since 1971
65Routes In State
55Years

Notable Wood Duck Trends in California

No notable trend signals for Wood Duck in California. See the full index history below.

Wood Duck Population Forecast in California

If the recent trend holds, Wood Duck in California is projected to rise about 339% by 2029 — from 0.10 in 2024 to a central estimate of 0.43 (95% range 0.07–0.78). A 5-year backtest shows a typical error of ±835.2%, with 0% of held-out values landing inside the 95% band.

+339%Change by 2029
0.43Projected 2029 index
0.07–0.7895% range
±835.2%Backtest error
19682029
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
20250.410.050.76
20260.410.060.77
20270.420.060.77
20280.420.070.78
20290.430.070.78

Wood Duck Survey Routes in California

Routes recording Wood Duck in California.
Lockwood1020051974
Honeydew820122012
Orange Cove720091980
Iron Gate620191988
Nubieber520181993
Bass Lake519771977
Gold Hill520241979
Fall River Mills520072007
Yreka520111985
Pennington420091985
Adelaida420231990
Horse Creek320191970
Crowder Flat320072006
Dorris320171998
Mccloud319841984
Moraga320112011
Genesee320152007
Point Reyes320151998
Red Bluff220231970
Gazelle219911991
Redwood N.P.220091996
Glenn220181972
Hughson220241993
Hackamore220102007
Oroville220241978

Wood Duck Population Trend in Other States

alabamaarizonaarkansascoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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