BirdAnalyst
Species · BCR 32 · BBS 2025 Release · 1966–2024

Wood Duck In Coastal California

All regionsCoastal CaliforniaWaterfowl

Wood Duck in Coastal California has surged: up 132% on the route-weighted index since 1972.

+132%Since 1972
35Routes In Region
53Years

Notable Signals

long arc increasecomputed index

Wood Duck has surged in Coastal California: up 132% on the route-weighted index since 1972.

Forecast

If the recent trend holds, Wood Duck in Coastal California is projected to rise about 104% by 2029 — from 0.19 in 2024 to a central estimate of 0.39 (95% range 0.00–0.84). A 5-year backtest shows a typical error of ±315%, with 100% of held-out values landing inside the 95% band.

+104%Change by 2029
0.39Projected 2029 index
0.00–0.8495% range
±315%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
20250.380.000.83
20260.380.000.83
20270.380.000.84
20280.390.000.84
20290.390.000.84

Routes In Coastal California

Routes recording Wood Duck in Coastal California.
LockwoodCALIFORNIA102005
Orange CoveCALIFORNIA72009
Gold HillCALIFORNIA52024
PenningtonCALIFORNIA42009
AdelaidaCALIFORNIA42023
Point ReyesCALIFORNIA32015
MoragaCALIFORNIA32011
Red BluffCALIFORNIA22023
HughsonCALIFORNIA22024
CoalingaCALIFORNIA21996
SangerCALIFORNIA22019
GlennCALIFORNIA22018
OrovilleCALIFORNIA22024
Mark WestCALIFORNIA21987
RumseyCALIFORNIA12005
GravesboroCALIFORNIA11995
Yokohl ValCALIFORNIA11993
AuburnCALIFORNIA11978
OrlandCALIFORNIA12015
OnoCALIFORNIA12012
FolsomCALIFORNIA12012
CrestonCALIFORNIA11977
WestleyCALIFORNIA12022
TehamaCALIFORNIA11998
Yolla BollyCALIFORNIA12015

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