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

American Wigeon Population Trend in Washington

All statesWaterfowl

American Wigeon in Washington has fallen sharply: down 57% on the route-weighted index since 1977.

-57%Since 1977
20Routes In State
46Years

Notable American Wigeon Trends in Washington

long arc declinecomputed index

American Wigeon has fallen sharply in Washington: down 57% on the route-weighted index since 1977.

American Wigeon Population Forecast in Washington

If the recent trend holds, American Wigeon in Washington is projected to rise about 158% by 2029 — from 0.05 in 2024 to a central estimate of 0.14 (95% range 0.00–0.93). A 5-year backtest shows a typical error of ±459.2%, with 100% of held-out values landing inside the 95% band.

+158%Change by 2029
0.14Projected 2029 index
0.00–0.9395% range
±459.2%Backtest error
19712029
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
20250.170.000.95
20260.160.000.95
20270.150.000.94
20280.140.000.93
20290.140.000.93

American Wigeon Survey Routes in Washington

Routes recording American Wigeon in Washington.
Rimrock620232015
Turnbull Nwr420131998
Chewelah319901990
L Pend O Nwr320162016
Brewster220121977
Selah220042004
Moses Lake219821977
Columbia Nwr220212018
Wapato219881988
Cusick220051990
Wilbur219871987
Nighthawk220241999
Curlew220001998
Keystone220181999
Harrington120001980
Reardan120181971
Connell119741974
Tonasket120001983
Omak Creek120242009
Odessa119981998

American Wigeon Population Trend in Other States

alaskacaliforniacoloradoidahokansasmichiganminnesotamontananebraskanevadanew-mexiconorth-dakotaohiooregonpennsylvaniasouth-dakotatexasutahwisconsinwyoming

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