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Species · Alaska · BBS 2025 Release · 1966–2024

Glaucous-winged Gull Population Trend in Alaska

All statesWetland birds

Glaucous-winged Gull in Alaska has surged: up 214% on the route-weighted index since 1974.

+214%Since 1974
60Routes In State
48Years

Notable Glaucous-winged Gull Trends in Alaska

long arc increasecomputed index

Glaucous-winged Gull has surged in Alaska: up 214% on the route-weighted index since 1974.

Glaucous-winged Gull Population Forecast in Alaska

If the recent trend holds, Glaucous-winged Gull in Alaska is projected to fall about 100% by 2029 — from 2.6 in 2024 to a central estimate of 0.00 (95% range 0.00–20). A 5-year backtest shows a typical error of ±37.9%, with 100% of held-out values landing inside the 95% band.

-100%Change by 2029
0.00Projected 2029 index
0.00–2095% range
±37.9%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
20251.00.0021
20260.740.0021
20270.470.0021
20280.200.0020
20290.000.0020

Glaucous-winged Gull Survey Routes in Alaska

Routes recording Glaucous-winged Gull in Alaska.
Homer46319821977
Cape Nome6320241993
Kodiak 24620231985
Kalifonsky3020231982
Cold Bay (Short)2819921984
Cordova2120241983
Yakutat2120241993
Dillingham2020171993
Juneau1620241983
Adak1320011983
Mitkof Isle1220102009
Zimovia Strt1220241989
Kodiak1119841983
Togiak River1120051994
Sitka1120241993
Skagway1020241993
King Salmon820241993
Goodnews Bay820051999
Seward719841982
Ketchikan720191971
Dillingham (Short)719841984
Petersville619871987
Salmon Lake520242003
Cohoe520162012
Council420232019

Glaucous-winged Gull Population Trend in Other States

californiaoregonwashington

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