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Species · Alaska · BBS 2025 Release · 1966–2024

White-winged Scoter Population Trend in Alaska

All statesWaterfowl

White-winged Scoter in Alaska has collapsed: down 90% on the route-weighted index since 1984.

-90%Since 1984
26Routes In State
39Years

Notable White-winged Scoter Trends in Alaska

long arc declinecomputed index

White-winged Scoter has collapsed in Alaska: down 90% on the route-weighted index since 1984.

White-winged Scoter Population Forecast in Alaska

If the recent trend holds, White-winged Scoter in Alaska is projected to fall about 100% by 2029 — from 0.30 in 2024 to a central estimate of 0.00 (95% range 0.00–2.2). A 5-year backtest shows a typical error of ±508.2%, with 100% of held-out values landing inside the 95% band.

-100%Change by 2029
0.00Projected 2029 index
0.00–2.295% range
±508.2%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
20250.000.002.2
20260.000.002.2
20270.000.002.2
20280.000.002.2
20290.000.002.2

White-winged Scoter Survey Routes in Alaska

Routes recording White-winged Scoter in Alaska.
Chiniak2519901990
Tonsina2220182018
Kotzebue1620242002
Ketchikan1519721972
Juneau720121983
Mccarthy Rd2620231991
Haines620041993
Hather Creek619941994
Thorne Bay 2620172017
King Salmon520072007
Cantwell320102004
Yakutat320011998
Monahan220031983
Cape Nome220182015
Juneau Alt219861986
Galbraith L.220242017
Happy Valley220242008
Lake Louise219931993
Dietrich Cmp220062006
Northway119941992
Coldfoot120022002
Mud River119931993
Kenny Lake119891987
Sheep Mtn120111983
Dillingham119941994

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